London software developer — fixed-price for the UK's largest tech hub.
London's tech scene is the largest in Europe. DeepMind, Revolut, Monzo, and Wise built here. RCB Software provides software development for London founders and operators at a fixed price — GDPR compliant, UK market ready.
London founder or operator who needs a software developer for a UK market application at a fixed price
London's software development market is world-class but expensive. Agency rates in London are among the highest globally. Finding a developer who works at a fixed price with direct accountability — not through an account manager — is uncommon.
London software development needs:
Fintech: London is Europe's fintech capital. Open Banking integrations, FCA considerations, payment gateway complexity.
Enterprise B2B: London's financial district drives demand for internal tooling and client-facing portals that integrate with enterprise systems.
Consumer: London's large, tech-forward consumer base is an excellent market for consumer applications.
GDPR: Every project built for UK/EU users needs GDPR-compliant data handling from day one.
Software project built in 8-12 weeks — GDPR compliant, UK market ready, fixed scope and price
Fintech applications
for UK's financial market
B2B SaaS
for London's enterprise ecosystem
Consumer applications
for the UK market
Internal tools
for London corporates
API products
and integrations
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
Software project built in 8-12 weeks — GDPR compliant, UK market ready, fixed scope and price
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
London development costs are high. Fixed-price is a responsible model for a defined scope.
Questions, answered.
Yes. Open Banking via TrueLayer or Plaid, GOV.UK Verify, Companies House, Royal Mail PAF for address validation, and UK-specific payment flows. GDPR compliance architectured from day one.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.