MVP and software development in London, at a fixed price.
Loomstrat is a London software company. Our Studio builds production MVPs and custom software in 3–6 weeks, for a price agreed before we start, and hands over 100% of the code and IP. The same team runs 6 live SaaS products of its own.
- Reply within 24 hours
- Fixed price before we start
- 100% code & IP ownership
- Based in
- London, United Kingdom
- Rapid MVP
- $15k – 30k
- Timeline
- 3–6 weeks
- Average sprint
- 21 days, brief to ship
- Ownership
- 100% code, keys & IP
Looking for an MVP development company in London?
Loomstrat Studio is a London-based development studio for founders and companies that need production software, not a prototype. Every build starts with a 60-minute working session that scopes the product backward from the one business metric it has to move, then fixes the price and timeline in writing.
Rapid MVPs typically cost $15k – 30k and ship in 3–6 weeks. You get weekly demos, live repository access, CI/CD from day one, and a full handover of the repository, cloud keys and documentation - with no retainer required.
What it costs to build software in London.
median day rate for a senior contract developer in London, from 322 quoted rates in the six months to 19 October 2026.
Source: ITJobsWatchof the $23.7 billion UK startups raised in venture capital in 2025 went to London startups.
Source: UK government evidence pack, Dealroom datafirst-year cost of one full-stack hire at the £65,000 London median, once employer National Insurance and minimum pension are added.
Source: ITJobsWatch salaries, our calculationaverage budget overrun on large IT projects - which also delivered 56% less value than predicted.
Source: McKinsey & University of Oxford, 5,400+ IT projectsContractors, hires or a fixed-price studio.
Model the London labour cost of your build, then compare it with how each route shares the risk.
Interactive calculator
What London developer time costs for your MVP
Built on live ITJobsWatch rates and 2026/27 employer costs. Labour only, before design, project management or hosting.
Contractor labour for this build
£39,000
2 × 30 days × £650/day
Per hire: £65,000 median salary + £9,000 employer National Insurance + £1,321 minimum pension = £75,321 a year, before recruitment fees, equipment and benefits.
| Factor | London contractors | In-house hires | Loomstrat Studio |
|---|---|---|---|
| Cost basis | £500–£788 a day each | ~£75,300 a year each | Fixed sum, agreed before work starts |
| Who manages the build | You | You, or a technical co-founder | Loomstrat |
| Who carries overrun risk | You | You | Loomstrat |
| Commitment after launch | None | Ongoing salary and notice periods | None - no retainer required |
| Code ownership | Needs a written assignment | Employer owns it by default | 100% handed over to you |
Contractor rates are the London senior developer interquartile range from ITJobsWatch. The hire cost adds 15% employer National Insurance above £5,000 and the 3% minimum pension to the £65,000 London full-stack median. Studio prices are quoted in US dollars.
In the UK, outside developers own their code by default.
Under section 11 of the Copyright, Designs and Patents Act 1988, only work made by an employee belongs to the employer automatically. Contractors and agencies own what they write unless they assign it, and section 90(3) requires that assignment to be in writing and signed.
- 100% repository and IP handover on every build
- Full git history - every commit and branch, not a zip file
- Cloud and domain keys transferred the same day
Brief. Build. Ship. No black boxes.
Every Studio engagement runs the same three stages, with a 21-day average sprint from brief to ship. You see progress every week and own everything at the end.
Brief
Days 1–3Tell us what you're building and why. In a 60-minute working session - not a sales call - we work backward from the primary business action and agree a fixed price and timeline.
Build
Weeks 1–3Our core team designs, builds and tests with production Next.js, secure database layers and clean integration topologies - with visible progress every week.
Ship
Day 21You own it. We hand over the GitHub repository, cloud keys, CI/CD pipelines and zero-debt documentation - no lock-in, no retainer required.
Enterprise-grade by default, not as an upsell.
The same standard applies to a $15k MVP and a $60k+ enterprise system - because it's the standard we hold our own products to.
Production TypeScript
Next.js, secure data layers and clean APIs.
CI/CD from day one
Deploy pipelines configured before features ship.
Zero-debt audit
Every build audited for technical debt before handoff.
Full git history
Every commit and branch - not a zip file.
Zero-debt documentation
Handed over with the code, not promised later.
Same-day key transfer
Cloud and domain keys moved to you at handover.
Transparent pricing, fixed before we start.
No hourly meters and no surprise change orders. Pick the range that fits; we fix the exact price in your brief.
Rapid MVP
Idea to a shipped, production-grade MVP, scoped around the one metric that has to move.
- Fixed-scope outcome brief
- Production TypeScript & Next.js
- CI/CD configured day one
- Weekly demos
- 100% repository & IP handover
Full Platform
A complete production SaaS platform, including RevOps and growth systems.
- Everything in Rapid MVP
- Billing, attribution & event telemetry
- Clean APIs & integrations
- Direct engineering access
- Zero technical debt guarantee
Enterprise System
Dedicated internal systems and spin-out SaaS products for established companies.
- Everything in Full Platform
- Scoped with your stakeholders
- Fixed price before we start
- Zero-debt documentation
- Walkthrough call at handover
Read the numbers before you hire anyone.
Start your London build.
Three short steps. Every brief gets a reply within 24 hours.
- A 60-minute working session, not a sales call
- Fixed price and timeline before we start
- 100% repository & IP ownership
Every Studio brief is scoped and reviewed by our founder.
Rahul D Sarker, Founder
What we build for London founders and companies.
Built for the industries where software decides the outcome.
Each industry page leads with independent market research - every figure linked to its source - and the Loomstrat proof that applies.
Yes. Loomstrat is a software company based in London, United Kingdom. Loomstrat Studio builds MVPs and custom software for founders and companies, and Loomstrat Labs runs its own portfolio of SaaS products.