saas & platforms

SaaS development company for platforms, portals & MVPs.

Platforms, portals and internal systems around your data model, delivered by senior engineers with agentic build pipelines.

2005 Established
30+ Admin hrs saved / wk
350+ Projects shipped
60+ Five-star reviews
case studies

Systems replacing the sprawl

SAAS & OPERATIONS

Field operations platform digitising social housing maintenance

OI Group
OI Group project
SAAS, CRM & AI

The operations platform running a commercial property consultancy

ESHP
ESHP project
AUDIT-READINESS SAAS

Three connected apps with AI drafting and enforced human approval

Oditable
Oditable project
AGENTIC OPERATIONS PLATFORM

A multi-company control plane for agents, tasks, budgets and approvals

Opsko
Opsko project
SonyVodafoneSymantecXP PowerSonardyne
why platforms fail

Sprawl, shallow MVPs, late integrations

OI Group was burning 30+ admin hours a week across five SaaS seats and spreadsheet chains before their Business OS. Sprawl, shallow MVPs and late integrations kill platforms - Map pins the workflows that retire day one.

[ 01 ]

Tool sprawl eating the week

Five SaaS seats, three spreadsheets and a brittle Zapier chain. OI Group was burning 30+ admin hours a week before their Business OS.

30+ hrsAdmin hours saved / week at OI Group
[ 02 ]

MVP that never becomes a product

Pretty shells with no billing edges, roles or data ownership. You learn nothing until months of rebuild.

MVP cutBilling and roles in version one, not phase two theatre
[ 03 ]

Integrations bolted on late

APIs and SSO arrive after launch as change requests. Every connector becomes an unplanned sprint.

Map firstConnectors scoped before Build volume starts
saas business os

Ops loops you should not staff a department for

Onboarding, support triage, usage outreach and billing recovery - agents on the loop, seniors on the decisions.

SAMPLE DATA
Marketplace OS · Live queue

Activation that does not wait for a CSM bench

Agents nudge trials through setup, first value and invites while you set tone and own the playbook.

Live queue
outreach console
Sent 128 Replied 34
agent.outreach · sequencing supply batch 04
Northfield Supply Sent
Harbor Procurement Replied
Cedar Lane Goods Queued
Atlas Facilities Sent
Vendor 19 · London Typing…
capabilities

MVP through internal platform

Honest SaaS MVPs

A first release with paying users, billing edges and roles - scope stays tight so you learn before the surface area explodes.

Portals & dashboards

Client portals and ops views that retire spreadsheet chains, with roles, audit trails and the screens each team actually opens.

Internal business systems

Process-first platforms that retire overlapping SaaS seats - we model the workflow, then engineer the system around it.

API integrations

Stripe, CRMs, finance and legacy systems wired with contracts and failure handling baked into the build.

typical capabilities

Platform surfaces that usually ship in version one

Auth, billing, onboarding, admin and support - scoped in Blueprint, not a change-request pile after Launch.

SAMPLE DATA
Subscriptions

Auth & billing

Plans, seats and Stripe-backed billing built into the product.

Live
Starter
£49 Plan
/ mo
Growth Active
£149 Plan
/ mo
Scale
Custom Plan
Quote
Seat utilisation 78%
MRR £62,400 +8.1% MoM

"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

Architects stay. Agents ship the slices.

Senior specialists steer platform agents across onboarding, triage, build and billing recovery - vertical slices at 5x pace.

Senior lead Directs · Decides · Signs off

Onboarding agent

Nudges trials through activation

Support triage agent

Routes, prioritises and drafts replies

Build agent

Ships platform slices in parallel

Billing recovery agent

Chases failed payments before churn

Every consequential decision and production release is signed off by a human.

How we work

Retire the sprawl in six deliberate steps.

Billing edges and data ownership pinned early. Architects stay through Launch - agents compress the build in between.

Step 1

01 - Map

Users, billing edges, data ownership and the workflows the platform must retire on day one.

Scanning market
51.4551°N / 0.9787°W 6 signals

Step 2

02 - Blueprint

Domain model, module boundaries, MVP cut and success metrics - fixed-scope quote locked.

Spec 02 / grid 8px
Scope locked 1390px

Step 3

03 - Build

Senior specialists direct agents through vertical slices: auth, core objects, admin and the first customer journey.

Sprint 03
Working software Week 2

Step 4

04 - Harden

Deep QA, security review and agent-led regression around billing, permissions and data integrity.

Audit: release 2.4
0 critical 6 checks passed

Step 5

05 - Launch

Migration plan, staged cutover and monitoring so load moves without a big-bang surprise.

Deploy: production Live
Uptime 100.00% v1.0.0

Step 6

06 - Evolve

Roadmap follows measured usage - modules, APIs and admin depth extend as demand proves them.

Release cadence
v1.0 v1.4 v2.0
Shipping weekly +340%
the offer

Free 30-minute platform scoping call

Show us the tool sprawl or MVP brief. Leave with what to build first, where agents fit after Launch, and a phase plan that retires the worst workflows.

You leave with
01 A build-vs-buy read on the platform bet
02 A phase plan that retires the worst workflows first
03 A realistic MVP boundary through Launch
04 Integration and data-ownership risks called out early
why code23

Proof from platforms we have shipped

[ 01 ]

5x throughput, senior directed

Auth, billing, admin and the first customer journey move under senior specialists directing an agent fleet. Gates unchanged; volume up.

[ 02 ]

Platforms that retire tool sprawl

OI Group's Business OS replaced five SaaS tools and 30+ weekly admin hours. We build for the workflows you already measure.

[ 03 ]

Building platforms since 2005

Twenty years of portals, ops systems and product software from Reading - not a first-time SaaS experiment.

[ 04 ]

Agents on SaaS ops after Launch

Onboarding, support triage, usage outreach and billing recovery sit in Business OS under senior policy - mastery of the agent layer, not bolt-on bots.

[ 05 ]

60+ five-star Google reviews

UK operators rate the work in public - proof when you pick a saas development company on delivery, not decks.

[ 06 ]

Scope agreed before Build

Scope locks after Blueprint, with additional work agreed as clearly as the backlog.

verified reviews

On the record, on Google

Real reviews from our Google Business profile.

Google 60+ reviews →

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 portrait
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 portrait
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 portrait
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 portrait
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 portrait
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 portrait
Louise Sellar Draks

blogs

Platform thinking

MVP cuts, billing edges, portals and how internal systems retire spreadsheet chains.

View all posts
About Code23

30+ admin hours back. Five tools gone.

OI Group's Business OS retired five SaaS tools and 30+ weekly admin hours - the kind of sprawl we design platforms against. You work with the architects staying on the build: no relay desk, and agents that let a small senior team ship like a larger one.

Meet Code23
Est. 2005 Reading, UK Hands-on senior team
The Code23 team working together in the Reading studio
Fig. 01 - The team, Reading studio 51.4551°N / 0.9787°W
James, founder of Code23
Fig. 02 - James, founder EST. 2005
A product review session at Code23
Fig. 03 - Product review WK 34 / 2026
faq

SaaS questions, answered

What is a SaaS company?

A SaaS company delivers software on subscription rather than one-off licences. Building one means product, billing, admin and support paths from the first release - not just screens.

How much does SaaS development cost?

MVP cut, integrations and how much admin and billing you need in version one set the band. Blueprint defines the first release and we confirm current pricing against that agreed scope before Build begins.

How long does it take to build a SaaS MVP?

Blueprint locks the timeline against a defined MVP cut. Map and Blueprint come first so Build does not discover the product mid-sprint. Agents compress build; integrations usually set the critical path.

Do you build internal tools as well as customer-facing SaaS?

Yes. Business systems, portals and ops platforms are core work here - OI Group's Business OS replaced five SaaS tools and 30+ weekly admin hours.

Can agents really run SaaS operations after launch?

Yes, inside a clear remit. Agents handle onboarding nudges, support triage, usage outreach and billing recovery while seniors set policy and own risk - so the platform runs lean.

How much does a SaaS MVP cost in the UK?

UK SaaS MVP cost depends on the MVP cut, billing depth and integrations required in version one. Map and Blueprint define the first release, then current pricing is confirmed against that agreed scope before Build begins.

Can I hire a SaaS development agency for a UK startup?

Yes. Startups hire us for an honest MVP cut - paying users, billing edges and roles - scoped in Blueprint so you learn before surface area explodes. You work with the architects on the build; agents compress delivery so a small senior team ships like a larger one.

get started

Which spreadsheet chain dies first?

Bring the workflows that burn the week. We'll bring platform scope, billing edges and architects who ship at 5x speed.