saas platform development uk

Building a SaaS product is one of the most commercially significant decisions a UK business can make. Done well, it creates recurring revenue, competitive advantage, and a scalable asset. Done poorly, it drains budget without delivering a working product. By Design UK is a UK-registered digital development company based in Enfield, London, and we specialise exclusively in turning SaaS concepts into production-ready platforms — with pricing from £18,000 to £650,000+ depending on scope.

What Does a SaaS Platform Development Project Actually Include?

Every SaaS build at By Design UK covers discovery, architecture, front-end and back-end development, user authentication, subscription and billing logic, admin dashboards, and deployment to a scalable cloud environment. We do not hand you a template — we build purpose-designed software around your business model. Our proof of work is Tackly.co.uk, a live SaaS platform we built and continue to support, now serving clients across 25 distinct industries in the UK. That breadth of real-world usage reflects the robustness of our builds.

How Much Should You Budget for SaaS Development in the UK?

Pricing depends on feature depth, number of user roles, third-party integrations, and whether you need multi-tenancy from day one. An early-stage MVP with core functionality typically sits between £18,000 and £65,000. A mid-market product with advanced workflows, API integrations, and a branded client portal generally ranges from £65,000 to £250,000. Enterprise platforms with complex data models, compliance requirements, and high-availability infrastructure reach £250,000 to £650,000+. We provide transparent, fixed-scope proposals — no surprise invoices mid-project.

What Happens After Your SaaS Platform Launches?

Launch is the beginning, not the finish line. Our SaaS monthly support plans start at £797 per month and cover ongoing maintenance, security updates, performance monitoring, bug resolution, and scheduled feature releases. Clients on support plans receive a named account contact and access to our UK-based development team without needing to hire in-house engineers. This continuity is why platforms like Tackly continue to scale without technical disruption.

Why Do UK Businesses Choose By Design UK for SaaS Builds?

We are a UK-registered company operating from Office 13, 25 Mollison Avenue, Enfield EN3 7LW. Our team works within UK business hours, communicates in plain English, and understands the commercial pressures facing UK founders and product owners. We do not offshore core development or use contractors unfamiliar with your project. Every build is managed end-to-end by a consistent team who understand the platform they are building. If you also need a retail presence, our Shopify store builds run from £499 to £18,999 — useful for SaaS companies who sell physical products alongside their software.