Car buying where approved dealers do the competing
RevXtra
“We’ve been working with James and the team at Code23 on the development of RevXtra and the experience so far has been excellent.”
BD
Billy Davis Co-founder, RevXtra
→
Costhetix · Service marketplace
A secure two-sided marketplace built around practitioner trust
Costhetix
“Working with Code23 to build Costhetix has genuinely been one of the best decisions I've made as a founder… They're knowledgeable, approachable, responsive and exceptionally good at what they do. I wouldn't hesitate to recommend them to any founder or business looking for a development partner they can genuinely trust.”
Nicola Kay Founder, Costhetix
→
Virtualstock · Enterprise marketplace
Europe's largest dropshipping platform redesigned around its users
Virtualstock
“The platform UI they delivered is completely transformed. The UX is intuitive, the dashboard now showcases the operational metrics that matter, and the modern UI gives our platform the enterprise feel our clients wanted.”
Ed Bradley Founder and CEO, Virtualstock
→
Away Pubs
why marketplaces fail_
Liquidity, payments, inexperience
We still operate seven marketplaces with our own money on the line - after 50+ builds across fifteen years. Liquidity, Stripe Connect payouts and take-rate maths sink marketplaces more often than bad code, so Map starts there.
[ 01 ]
No liquidity, no marketplace
Empty marketplaces stay empty. Buyers won't come without supply, suppliers won't list without buyers.
OS teaserSupply + demand outreach running from launch, not month six
[ 02 ]
Payments complexity kills momentum
Split payouts, vendor KYC, refunds and disputes across dozens of sellers. Get it wrong and trust evaporates.
Stripe ConnectSplit payouts running in production on our platforms
[ 03 ]
Agencies that have never run one
Most teams hand over the keys and leave. They've never had to find supply, price a take rate or fight churn themselves.
50+ builtSeven operated today with our own money on the line
marketplace business os_
A marketplace that runs itself is the goal
Every Code23 marketplace can plug into our agentic operating system: agents that work your marketplace around the clock, directed by you.
SAMPLE DATA
Marketplace OS · Live queue
Supply and demand outreach, running 24/7
Agents work both sides of the market from day one - prospect queues, sequenced sends, reply triage - while you set the brief and approve the tone.
Live queue
outreach console_
Sent 128 Replied 34agents: 2 · humans: 1
▸agent.outreach · sequencing supply batch 04_
Northfield Supply Supply Sent 12s
Harbor Procurement Demand Replied 41s
Cedar Lane Goods Supply Queued -
Atlas Facilities Demand Sent 2m
Vendor 19 · London Supply Typing… live
Marketplace OS · Agent roster
Hire specialised agents for the work that never sleeps
Vendor onboarding, listing enrichment, support triage, disputes - specialised agents with marketplace skills, directed by a senior human.
Agent roster
Vendor onboarding agent
Active
KYC Applications Role assign
▸ processing queue
Listing enrichment agent
Active
Copy Categories SEO fields
▸ processing queue
Support triage agent
Active
Inbox Priority Route
▸ processing queue
Dispute agent
Standby
Evidence Payout hold Escalate
▸ awaiting brief
Marketplace OS · OS bus
Agents, humans and your marketplace as one
Marketplace Business OS connects your brief, the agent fleet and the live platform - one operating system, not a pile of disconnected tools.
OS bus
You
Directs · Decides · Signs off
Outreach
Onboarding
Listings
Support
QA
your marketplace_ Listings · Transactions · Payouts · Liquidity
Marketplace OS · Vision
A marketplace you can run with a team of one
Traditional marketplace ops need a bench of roles. With Marketplace OS, you direct; agents do the operational heavy lifting.
Vision
Traditional ops team
Ops lead Vendor success Content Support L1 Support L2 Disputes Growth Analyst
Eight roles before the marketplace even finds rhythm.
You + agents
You
Outreach agent
Onboarding agent
Listings agent
Support agent
QA agent
A marketplace you can run with a team of one - agents
doing the operational heavy lifting.
Listings, search, messaging, reviews, admin and the full transaction loop - engineered from the data model out, not bolted onto a shop theme.
B2B marketplace platforms
Trade accounts, quote flows, bulk ordering, credit terms and compliance for buyers who purchase on behalf of a business.
Multi-vendor commerce
Seller KYC, catalogue tools, commission rules and operator queues - the supply-side surface that decides whether liquidity ever forms.
Service marketplaces
Booking, availability, vetting and two-sided reviews for platforms that sell people's time. We operate several of these ourselves.
Payments & Stripe Connect
Split payments, vendor onboarding, KYC, automated payouts, refunds and disputes - Stripe Connect as the default money path.
C2C & peer marketplaces
Peer listings, trust and safety, disputes and take-rate economics so casual sellers and buyers finish clean transactions.
out of the box_
The operating surfaces a marketplace needs
Vendor onboarding, payments, bookings, messaging and moderation ship in the core build - the same stack behind the seven platforms we still run.
SAMPLE DATA
Ops dashboard
Dashboard
GMV, liquidity and cohort views your operators actually open.
7d
GMV £184k
Liquidity 62%
Take £23k
GMV · 12 weeks +18% WoW
Top vendors 7d GMV
Northfield Supply
£42.8k
Vendor 02
£31.4k
Harbor & Co.
£28.1k
Vendor 04
£19.6k
Cedar Lane Goods
£14.2k
Vendor queue
Multi-vendor onboarding
Applications, KYC checks and role assignment in one queue.
12 pending
Pipeline stages
01 · Applied 02 · KYC 03 · Live
Vendor 11
Applied
KYC
Live
Applied
Vendor 12
Applied
KYC
Live
KYC · verifying
Vendor 13
Applied
KYC
Live
Live
Throughput
12 → live / wk
Payout ledger
Payments & payouts
Split payments, automated payouts and reconciliation built in.
Settled
Order £1,240 Authorised · card
Split
Platform fee £186 15% take
Vendor payout £1,054 Net · T+2
Payout ledger Running balance
Northfield Supply £1,054.00 Paid £18,420
Harbor & Co. £642.50 Paid £9,880
Cedar Lane Goods £318.00 Pending £4,210
Vendor 07 £890.25 Pending £12,040
Index live
Search & discovery
Faceted search, ranking and category browse that scale with inventory.
48k docs
studio hire · same-day · under £200_ Query
Category Price Rating Distance Same-day
01
Studio session · 2 hrs Same-day · Central
Rank 98
Relevance
92%
02
Equipment hire · day rate Vendor verified
Rank 91
Relevance
78%
03
On-site install · half day Buffer included
Rank 84
Relevance
64%
Availability
Bookings & availability
Calendars, buffers and confirmation flows for timed inventory.
Thu 14:00
March 2026
Avail Booked Blocked
M T W T F S S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Thu 12 · slots
09:00 Open
11:30 Open
14:00 Confirmed
Hold released · buyer notified
16:30 Blocked
Thread 04
Messaging & notifications
In-app threads, email and push with delivery status.
Delivered
Push · delivered Booking hold confirmed for Sat 10:00
Buyer · Vendor Thread 04
Is the Saturday morning slot still free? 09:14
Yes - 10:00-12:00 is open. I can hold it for 15 mins. 09:16
Perfect. Can you confirm parking on site? 09:17
Two spaces behind the unit. Gate code in the booking. 09:18
Book it. Paying now. 09:19
Studio bay · half day Listing · SKU-1842
£180 Available
Book
Trust score
Reviews & ratings
Two-sided ratings, moderation flags and public trust signals.
4.8 / 5
4.8
1,284 ratings
Distribution
5
68%
4
22%
3
6%
2
2%
1
2%
Buyer · verified
Booked, paid and confirmed in one flow. Slot held exactly as shown.
Vendor · verified
Payout landed on schedule. Messaging thread kept the change request tidy.
Take rate
Subscriptions & take rates
Plans, commissions and take-rate controls per category.
12.5%
Starter
8% Take rate
£0 / mo
Growth Active
12.5% Take rate
£149 / mo
Scale
15% Take rate
Custom
Effective take 12.5%
MRR £48,920 +6.2% MoM
Moderation
Admin & moderation
User bans, listing review and dispute tooling for operators.
3 flags
All Flagged Disputes
LST-204 Policy match High
Approve Reject
USR-881 Chargeback risk Med
Approve Reject
MSG-044 User report Med
Approve Reject
Audit log
14:02:11 FLAG raised · LST-204
14:02:44 QUEUE assigned · ops-02
14:05:03 HOLD listing · inventory
14:08:19 NOTE added · evidence
14:11:52 AWAIT vendor reply
"We've recently completed Phase 1 of a bespoke business valuation tool with James at Code23, and I've been extremely impressed. He took the time to understand both the commercial and technical requirements, communicated clearly throughout, and delivered a well-thought-out system."
Jason Atkins Director, Lansley Commercial
Delivery model_
Operators direct. Agents multiply.
Senior developers steer marketplace agents across outreach, listings,
build and QA - operator judgement at machine throughput.
Senior lead
Directs · Decides · Signs off
Supply outreach agent
Fills both sides of the market
Listing agent
Enriches inventory and content
Build agent
Ships platform features in parallel
QA agent
Hammers payment flows before buyers do
✓
Every consequential decision and production release is signed off by a human.
How we work_
From liquidity model to live payouts.
Commercial truth first, then architecture, then an agent-accelerated
build with operators still in the room.
Step 1
01 - Map
Supply, demand, take rate and the transaction loop land first - commercial truth ahead of architecture diagrams.
Scanning market_
51.4551°N / 0.9787°W6 signals
Step 2
02 - Blueprint
Listings, transactions, payouts and UI prototypes locked into a fixed-scope plan your operators can defend.
Spec 02 / grid 8px
Scope locked1390px
Step 3
03 - Build
Senior developers direct AI agents across marketplace surfaces in parallel, with review on every merge.
Sprint 03_
Working softwareWeek 2
Step 4
04 - Harden
Payout edge cases, refunds and disputes get probed at machine depth before money moves in production.
Audit: release 2.4_
✓
✓
✓
✗
✓
✓
✓
0 critical6 checks passed
Step 5
05 - Launch
Payments live, monitoring on, and a cold-start plan so supply is seeded ahead of buyers.
Deploy: productionLive
Uptime 100.00%v1.0.0
Step 6
06 - Evolve
Liquidity metrics, take-rate tuning and feature scaling - the same loop we run on the seven we operate.
Release cadence_
v1.0v1.4v2.0
Shipping weekly+340%
the offer_
Free 30-minute marketplace scoping call
Walk liquidity, Stripe Connect and Marketplace OS with a senior specialist who has launched and operated marketplaces - viability first, estimate second.
02 A payments architecture sketch on Stripe Connect
03 A build outline with timeline and scope boundary
04 A straight answer on whether it's viable
why code23_
What operators notice first
[ 01 ]
50+ marketplaces, seven operated
Fifteen years of marketplace development. Costhetix, Kinurture, BigSleep, WorkVans, Sponsorfy, Away Pubs and Jollee still run on our watch - playbooks from operators, not slide decks.
[ 02 ]
5x build speed, senior controlled
Build and ops run under senior specialists with agents on the bulk. Harden gates hold; calendar and burn drop.
[ 03 ]
Payments in production
Stripe Connect split payments, vendor KYC and automated payouts already live on our platforms. We do not invent your money path in theory.
[ 04 ]
Liquidity thinking first
Empty markets stay empty. We map supply, demand and the first 90-day seeding plan before UI expands - then plug into Marketplace Business OS outreach so both sides keep filling.
[ 05 ]
Harden on payment flows
Named Harden step on payouts, refunds, disputes and trust edges. Agents probe at machine depth under operator-grade review.
[ 06 ]
Senior team, direct
You work with the people building the marketplace. No account-manager relay, no offshore handoff. Reading, UK.
We've recently completed Phase 1 of a bespoke business valuation tool with James at Code23, and I've been extremely impressed. He has taken the time to understand both the commercial and technical requirements, communicated clearly throughout, and delivered a well-thought-out system with a high level of flexibility. The admin dashboard, in particular, gives us full control over the scoring and valuation logic, which was a key requirement. I'm looking forward to working with James on Phase 2 and would have no hesitation in recommending him to anyone looking for bespoke software development – Jason Atkins, Director, Lansley Commercial
Jason Atkins Lansley Commercial
We couldn’t be happier with the service from Code23. They were a pleasure to work with—friendly, professional, and really took the time to understand our needs. They met our brief perfectly, delivering a website that looks great and performs exactly as we envisioned, all at excellent value for money. What sets Code23 apart is their aftercare. Knowing they are on hand to monitor and maintain our website means we never have to worry about its performance. Their ongoing support gives us complete peace of mind, and we’d highly recommend them to anyone looking for a reliable and skilled web development team
Dan Isterling Premier Community
It has truly been a fantastic experience working with the Code23 team. Every part of the process from the scoping and onboarding down to the design and implementation of our website was handled excellently. The quality of service delivered by the team is globally top standard and I couldn't be more satisfied with the final outcome.
Samuel Elili Redwire Group
I have worked with Code23 and their team for over 5 years across 3 different projects ranging from mobile app development to custom WordPress websites. Together the team bring a level of expertise and professionalism I have not seen anywhere else... The results achieved have really helped to grow our business. I highly recommend their services to anyone looking for a custom project to be completed on time and in budget.
Alexander Campbell EnjoyCBD
We worked with Code23 for a complete rebuild of our music related website. Excellent customer service and quality throughout and the build they have now completed is fantastic - exceeded all expectations across the board. Fantastic company with a dynamic and motivated team who are great to work with. Would highly recommend!
Nathan Fullbrook Jamma Music
Joe and the team at code23 have done a fantastic job helping us design and build our new website. I feel they really captured the quality of the Draks brand. Would highly recommend.
Louise Sellar Draks
Code 23 delivered a great website for me on budget and on time. They are a great team to work with and highly professional. They simply get the job done,
Luca Rado The Live-in Care Company
A real pleasure working with Code 23 who, from the beginning listened to our needs, were able to navigate the challenges that arose during the project, and had the expertise to deliver a secure and future proof site. We really valued their flexibility to adapt, without compromising the creative direction and functionality.
Laura Pride Berkeley PR
We chose Code23 to build our new website and we were not disappointed! A great service from start to finish, creative, professional and friendly. Can't fault them.
Hannah Vincent Ozone Interiors
I have worked closely with Code23, James in particular, for over a year now. They have been more helpful, more knowledgeable and more willing to go the extra mile than any other web developers that i've worked with in the past. I would strongly recommend Code23 for any website & app development.
Alex CampbellLocal Guide EnjoyCBD
We worked with Code23 in the Autumn of 2021 as a potential website development partner for our new company website. We immediately felt confident that Code23 could deliver a fantastic quality product and that they knew exactly what to do to take our digital presence to the next level. Fast forward 3 months, and with zero delays to our project, and we're delighted with our newly launched website. The styling, functionality and overall build quality is exceptional, and in the eight years that I've worked with web agencies, this is by far the smoothest migration and launch that I've been involved with. I would highly recommend Code23 as a website development agency.
SR
Sam Roberts Google review
I've been Code23 client for 5 years (and my website has been with the company from the start). James and his team is always responsive to any support I need and did an excellent job in re-designing and re-building our marketplace website. This was a very complex job with separate shops/payments/blog/categories and everything was custom coded and designed for our website. It was great to be part of the re-design process and working with James and his team has been a truly positive experience. Code23 has also provided our hosting and on-going support, back ups, online security and maintenance. Definitely recommended to anyone who is thinking of having their website designed by professional team - you'll be in a good hands!
MM
Magdalena Marsden Google review
What can I say! We are over the moon with our new company website. :) Code23 have most definitely got the 'WOW' factor. Eye catching design, superb user experience and extremely well project managed end-to-end. It was hassle free and the end result is far better than we ever imagined. I can't recommend enough. Thank you to James and the team. Top service!
CK
chanelle kirkum Google review
The results of Code23’s hard work, professional approach, and ability to work together with us to create our vision, has resulted in an end product that we couldn’t be happier with. They have provided us with a fully rounded service, including plenty of support, advice, and guidance for the future too. We are all very excited to welcome our customers back to our wonderful new e-learning platform.
JC
Jake Carter Google review
James and his team are very talented, energetic and ambitious ... as much in supporting our business as in also developing their own. Very clever, very quick, on the front-foot, spot-on detail. No smoke nor mirrors, but straightforward and honest. We are delighted to have found them and very grateful for their help in making our new business flourish. Very, very, very highly recommended.
TT
Teachers To Your Home Google review
We've worked with Code23 for many years now with our current site and we are in the process of building a new site with them. Very happy with the level of service and responsiveness, would highly recommend their services.
VR
Vintage Roots Google review
Joe, James, Steve and Phil are an absolute pleasure to work with. I am looking forward to working with them again soon
SM
Scott Marshall Google review
Such a pleasure to deal with such a professional and knowledgeable company. I would highly recommend them.
JS
Jim Sidroy Google review
Amazing shop experince with best service
AE
Ahmed EidLocal Guide Google review
After using a Marketing agency to design my first website, they done quite a shabby job and making amendments only made things worst. Shortly after I used several different freelancers with the majority of them promising great outcomes but falling short on delivery, I came across Code 23 almost half a year ago with little faith in finding a good development team. I had a thorough conversation with director James who assured me he and his team could help and introduced me to some great options in design for an affordable price. I was introduced to Project Manager Joe shortly after. My website development and design are near its end and I’m glad I met the team. Joe is great with feedback, patience and understands me as a client. I’d like to also thank Isaac and the rest of the team in producing a stunning, professional and sleek website. I’ll definitely be using the team for continued work and future projects! Thank you!
OG
Our Graduates Google review
Code 23 are a first class web design agency. James, Joe and their team are a pleasure to work with and made the process very easy from a client perspective. I was impressed with their ability to work up briefs quickly, their ability to keep to deadlines and the quality of the site that they delivered. They are highly recommended and an agency we will continue to work with on other projects.
WT
Wilde Toast Google review
Code23 undertook a large redevelopment project for us, including the rollout of over 100 individually branded websites. The overarching goals of the project were to improve: 1. Our Flexibility & Control 2. Customer Experience 3. Transparency Around Pricing All of which were delivered to an excellent standard, especially the new custom quote builder, which is industry leading! We look forward to continuing to develop these websites and build on the relationship with Code23 in future. Great work team!
FP
Funeral Partners Google review
We have used Code23 for many of our website projects and they have been absolutely fantastic every time. They ensure that meetings are held to discuss the particular project needs, they set clear timelines and stick to them, they are always on hand for client support (e.g. calls/meetings with client to take them through processes.) The team are always easily contactable and happy to help with any queries and most importantly, their work is outstanding!
B
BH&P Google review
Working with Code23 on CIS's fantastic new website has been a pleasure from start to finish! I would highly recommend their web services to anyone looking to bolster their digital presence. Having worked with several web designers in the past, I can confidently say that Code23 is a cut above the rest. Thank you to everyone at Code23 for your professionalism, hard work and vision.
ON
Oliver NewtonLocal Guide Google review
James is very knowledgeable and is great to work with. He has been very responsive and helpful. We look forward to continuing to work him and his team.
PD
Paul Dawson Google review
Can't recommend these guys enough... really great service with expert advice. The technology they managed to integrate into our self service kiosk was outstanding and went the extra mile to make sure everything was as we wanted. Great job guys, i'll be engaging with Code23 for any future upgrades and add ons required TAN
TR
T-A-N Reading Google review
I'm incredibly impressed with Code23 - they have been a pleasure to work with which has been a breath of fresh air! They are professional and are always quick to respond. Thank you Code23! Highly recommended!
JB
Jennifer Butler Google review
Fantastic! Nothing was a problem for James and the team at Code23 when it came to delivering our website. Cant wait to see how its recieved in the big wide world now!
NM
Nic Morgan Google review
Having turned to Code23 after a bad experience with another web designer, I can confidently say that the service James, Joe and their team provided is exceptional. They are incredibly receptive, professional and patient. They listened to my "vision" and together with their knowledge and experience delivered an e-commerce website which is perfect, even better than I though it could ever be. Throughout the process, James and Joe were always on hand and easy to communicate with and would send regular updates. I am particularly appreciative of the time, care and dedication they put into this project. Many thanks for making me the website of my dreams!
EM
Eve Moira Google review
It's safe to say Code23 rescued an interiors-obsessed creative - with zero tech savvy - but with a big e-commerce vision! The talented team at Code23 assembled my website graphics, layouts and shop brief with a Wordpress e-commerce theme to create a secure, functioning website that I am proud of. They also oversaw the 'go live' and future-proofed the backend (to the extent that is possible!) and now maintain my site with daily checks and updates. They were a pleasure to work with, always at the end of the phone and took my lack of technical knowledge in their stride, guiding me through processes as necessary. Highly recommend.
AS
Annabel Smith Google review
We approached Code 23 at a time when we had been let down by our previous website design & management contact and from the very first email exchange, it was clear we were dealing with an excellent company. James, Joe and their team are always on hand to provide the advice and reassurance we need for all things web and digital. In the short time I’ve worked with them so far they’ve provided a fully managed service for our website, made significant improvements to its design and set up, and somehow managed to create a very complicated custom plugin development work seamlessly for our property sales and lettings element of the business - all whilst talking in plain English and not baffling us non-technical people with jargon. If you’re looking for a digital agency that will go the extra mile without being asked, provide clear, transparent costings, with work delivered by good honest people then Code23 are the company for you.
KG
KatieLocal Guide Google review
After four years, my business website needed a refresh and I turned to Code23. They were full of great ideas, helpful and patient, turning my requests and ideas into something tangible. I’m incredibly happy with the end result and wouldn’t hesitate them to anyone looking for web design support.
DR
Dr. Richard MacKinnon Google review
After wanting to up my game with my marketplace website I found Code23. They made switching web agencies really easy and have consistently provided great support, thoughtful suggestions and advice to improve the website thats has helped me focus on growing the business. The team are super responsive which is very reassuring for a non-techie!
TA
Team Admin Google review
As a professional trying to struggle with the less than perfect IT provisions of the (IT-clueless) NHS, Code23 has been a breath of fresh air! Code23 has been phenomenal in helping me set up and in supporting my specific non-standard projects. I was particularly impressed by how friendly, approachable and versatile they were, treating me with patience and understanding. A friendly, approachable, efficient, versatile and highly professional service!! Many thanks Code23...
SK
S KLocal Guide Google review
Our website needs have been looked after by Code 23 for many years. We have successfully developed a number of websites together and we have always found Code 23 to be excellent to work with. I would highly recommend Code 23 to anyone looking for a professional, efficient and friendly website designer.
A
Adam Google review
Code23 were the best company I could have found to start my new business website. Despite it being a relatively hard to explain idea, James and the team understood exactly what the site's function was and built a brilliant bespoke design to fit my needs. Even going the extra length to recommend ideas and tweaks that I hadn't thought of to improve the way it runs and deliver something that I am proud to have as the main online front for my business
CB
Chris Bound Google review
We've worked with Code23 for many years now. They designed our first website and have been working on our SEO for a year or so now. On the back of this they've completely re-designed our site, which has just gone live. We're delighted with it. Code23 give excellent service - always professional, prompt and technically superb. Many thanks to the team.
FH
Franny Hornblow Google review
We have been working with James and the team at Code 23 for about 18 months now on a lengthy and sometimes complicated app development. At all times we have found Code 23 to be calm, competent, and their advice has been invaluable. The app is now live and we are extremely pleased with the results and are happy to continue our relationship with Code 23 for enhancements and hosting. We would be pleased to recommend Code 23.
SC
stuart campbell Google review
Pleasure to work with and very happy about the design element, general service and performance of Code23
WF
Williamson Fine Teas Google review
I have used Code 23 on 3 different occasions over the last 7 years. Every company I have worked for has had a very different requirement and Code 23 designed and built 3 completely bespoke sites. James is always on hand to answer queries. I highly recommend Code 23. I wouldn't even consider another web agency.
HE
H EastlakeLocal Guide Google review
I approached Code 23 for help with security on my website. They were helpful, receptive, friendly and professional. The work was completed in less than 24 hours and the few inevitable follow up glitches were dealt with immediately. Very pleased and have already recommended them to others.
NO
Nick Owen Google review
Code23 have provided great guidance and advice for my a site they created for a new business. Highly recommend genuine people that offer a first class service.
DM
Dhreen Malam Google review
James and his team at Code23 have recently provided us with a brand new website with a responsive design that looks great on any device. Being based on the WordPress platform it's easy for us to manage the content ourselves, which allows us to keep the website fresh as new products and industry news arrives. There are lots of ways of getting websites built, but choosing Code23 turned out to be a great investment for us. James and his team are at the cutting-edge of web design and technologies, and after initial discussions they completed the build needing very little input from us thereafter. We're very pleased with the final result - James understood exactly what we were looking for and managed to make the whole process exciting rather than tedious. Highly recommended!
SH
Steve Huse Google review
James Ansell really understands the technology behind building a robust and search engine friendly website. Code23 manage web design and build projects extremely efficiently, with complete visibility throughout the project. As a marketing agency, I need technical partners that are more than just efficient. James and his team think creatively throughout every project, ensuring that the finished site really brings the proposition to life, is easy to navigate, and the right fit for clients' needs.
RH
Rebecca Holland Google review
In my eyes James is a genius! We worked together several years ago when I decided to go freelance as a PowerPoint presentation designer. He played a huge part in getting me set up to go it alone and has supported me ever since. In all honesty, at times I don’t know what I would have done without him. He is not only technically savvy but a brilliant web designer. He understands my limitations when it comes to IT and has always been there whenever I have needed help at the drop of a hat. I would absolutely recommend code23. They are true experts in their field and will always be there to help in whatever way they can. Highly, highly recommend them!
RD
Rachel Deadfield Google review
I am a professional Sports Massage Therapist, whom Code 23 created my website, branding and helped me through the start up of my new business. James at Code 23 was not only my web designer but also my mentor as I was new to business. James and the team at Code 23 helped me through creating the website, which would be best for me and my business. I found James was very approachable, professional, knowledgeable and honest as well as the quality of his work being at the highest of standards. I would not hesitate to recommend Code 23 to anyone in the future.
GK
Greg Kimber Google review
James and the team have provided web design, hosting and ongoing support to our business (Universal Science Ltd) for a number of years and they have never failed us. Response to enquiries is always fast, friendly and accurate and I know I can rely on Code23 to do what they say, when they say. James is really on top of his game and knows every detail of our setup and can always advise on what else we could be doing or improving. Overall, an excellent business partner!
JV
Jason Vaughan Google review
Code 23 took the time to understand our companies needs and designed our website accordingly. James was always available to guide us through when I needed help. The design was bold and engaging and with help from Code 23 we have been able to keep it updated and fresh. A great company to work with.
HE
Hazel Eastlake Google review
Code23 totally redesigned and rebuilt my online marketplace (WowThankYou) nearly 3 years ago, and have continued to support the site, and us, ever since. When things go wrong, they are quick to sort it. When we have questions, they go out of their way to answer us, and when better technology comes along that we ought to consider they tell us about it. Without James and his team I couldn't guarantee we'd still be trading! On behalf of WowThankYou, and myself, I can wholeheartedly recommend Code23 if you want a dynamic, stand-out website with the security of brilliant ongoing support. We look forward to many more years association with Code23
TK
Tracey Kifford Google review
James has provided us with expert advice and built two websites, both of which receive glowing feedback from our clients. James is on hand to answer any queries and always provides excellent customer service. We do not hesitate to contact him whenever we have any web-related issues.
TW
Theale Wellbeing Google review
We've engaged Code23 on multiple web projects over the last 7 years. Their professional approach, insightful advice and personalised designs have helped turn our ideas into websites that generate business. The team at Code23 treat our brand as if it were their own, and they're always willing to go with extra mile. They're worth every pound we've spent with them.
JG
JLocal Guide Google review
The team at Code23 were extremely professional, patient and proactive with the build of our new website, providing added value through polite suggestions on improvements and an experienced insight into how we could improve our SEO. We look forward to working together on future projects.
NV
Niels van Gijn Google review
We wanted to update our site to an ecommerce site with the latest social media links. James had previously built our site so changes like these could be made with the least disruption and cost. We were thrilled with the results. As always James took the trouble to clearly understand our needs.
EH
Elizabeth Hibberdine Google review
James Ansell really knows his stuff... and goes over and above the call of duty in my opinion. He's done everything we've ever asked and more. We are always getting comments about the look and feel of our website and how easy it is to navigate and use. This is all down to James. I would highly recommend James to anyone without a moment of hesitation.
VF
Vernon Francis Google review
We've worked with Code23 on a number of projects now, both under Total Fundraising and Sponsor.ie. The results have always exceeded expectation and the service is great. I would have no issue recommending them and will continue to use them in the coming years.
SS
Simon ScriverLocal Guide Google review
Working with James at code23 was a pleasure. I found it very professional and I was extremely happy with the service they provided. He went above the call of duty with additions and revisions, and I couldn't be happier with the final product they produced.
SN
Shane N Google review
Code23 always give us a fast and friendly service where nothing seemed to be too much trouble. All the tweaking requests were gladly implemented by them which greatly relieved my mind as some things you simply can't know until its already done. It felt just like a friend was setting it up for me and teaching me how to use the various backend functions.
MM
Martin McNeill Google review
James is uber efficient! A resolution, response and or answer is back within a very timely manner, no chasing is required. James is clearly "at one" with IT and technology, however, he understands not everyone is as comfortable with code and jargon. He pitches his communication to suit your level of understanding which is such a relief! Thank you James and code23 for your on-going support. Cat from ABCpure
BW
Ben Webeck Google review
Code 23 are consummate professionals and I could not be more thrilled with the website they designed for me! With the minimum of fuss, maximum care, they guided me through the process and accommodated every one of my requests. I recommend them to absolutely everyone. You won't find better, I guarantee it.
LA
Lucy Abrahams Google review
James is great to work with, gets things done and produces high quality work :)
JS
Jeni Sanderson Google review
blogs_
Marketplace thinking
Take rates, supply seeding, Stripe Connect and the operating loops behind multi-vendor platforms.
We've built 50+ marketplaces over 15 years and still operate seven with our own money. You work with the people who run those platforms: no account-manager relay, and agents that multiply operator throughput.
Fig. 01 - The team, Reading studio51.4551°N / 0.9787°W
Fig. 02 - James, founderEST. 2005
Fig. 03 - Product reviewWK 34 / 2026
faq_
Marketplace questions, answered
How much does it cost to start an online marketplace?
It depends on the number of sides, payments depth and how custom the MVP is. Blueprint defines the transaction loop and first release, then current pricing is confirmed against that agreed scope.
How long does marketplace development take?
The Blueprint MVP cut sets the timeline, including payments and first supply tools. Multi-vendor and B2B approval flows add time - we say so up front. Agents compress build; integrations and supply seeding usually set the critical path.
How to develop a marketplace?
Start with supply and the transaction loop, then architecture and payments. We run Map, Blueprint, Build, Harden, Launch, Evolve so commercial truth lands before UI expands.
How does a marketplace make money?
Commission on each transaction is the standard model. Listing fees, vendor subscriptions and featured placement sit alongside it. We model the take rate in scoping - that number decides whether the platform is a business.
Can AI agents really run marketplace operations?
Yes, inside a clear remit. Agents already handle outreach, listing enrichment, support triage and QA while seniors set policy and own risk - so you run lean without losing the operating judgement.
Which marketplaces do you operate yourselves?
Seven: Costhetix, Kinurture, BigSleep, WorkVans, Sponsorfy, Away Pubs and Jollee. We built each one and still run them day to day. Across 15 years we've shipped 50+ marketplaces in total.
Do you use Stripe Connect for multi-vendor payouts?
Yes. Stripe Connect is our default: split payments, vendor KYC, automated settlement, refunds and dispute handling, with reconciliation built in.
get started_
Got supply, demand and a take-rate thesis?
Bring the model. We'll bring 50+ builds, seven we still operate, and senior developers who ship at 5x speed.
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