Wall & Fifth (W&5) is a senior-led UK software studio that designs and builds custom digital products for founders and ambitious businesses. We work across web and mobile apps, MVPs, marketplaces, SaaS and B2B SaaS platforms, and AI applications — from grounded chatbots and RAG systems to AI integrated into existing products.
We are deliberately not a template shop, a no-code studio, or an offshore hourly team. Every project is designed and engineered by senior people — the person you speak with is the person who does the work — using a modern production stack (Next.js, React, React Native, TypeScript, Python). We build real software from scratch, delivered at a fixed price agreed up front, and we hand over the full codebase and infrastructure on delivery, so clients own what they paid for with no lock-in or licensing.
Our work spans product and UX design, marketplace and platform builds, payments, and AI features engineered to be reliable in production rather than bolted on. Recent projects include Loopa, a premium iOS social app built on React Native and Expo; busesforsale.com, an online marketplace; sellyourboat.io, a yacht marketplace with a Claude-powered AI search layer; and KompiPay, a Stripe-based payments product. We also build and run our own products, so we make real product and technical decisions with our own money on the line.
Beyond project work, Wall & Fifth acts as an embedded partner for founders who want senior product and engineering involvement over time, from £8,000/month. Whether you are launching a new venture, rebuilding a platform, or adding AI to an existing product, we scope it, price it fixed, and build it as software you own.
Wall & Fifth (W&5) is a senior-led UK software studio that designs and builds custom digital products for founders and ambitious businesses. We work across web and mobile apps, MVPs, marketplaces, SaaS and B2B SaaS platforms, and AI applications — from grounded chatbots and RAG systems to AI integrated into existing products.
We are deliberately not a template shop, a no-code studio, or an offshore hourly team. Every project is designed and engineered by senior people — the person you speak with is the person who does the work — using a modern production stack (Next.js, React, React Native, TypeScript, Python). We build real software from scratch, delivered at a fixed price agreed up front, and we hand over the full codebase and infrastructure on delivery, so clients own what they paid for with no lock-in or licensing.
Our work spans product and UX design, marketplace and platform builds, payments, and AI features engineered to be reliable in production rather than bolted on. Recent projects include Loopa, a premium iOS social app built on React Native and Expo; busesforsale.com, an online marketplace; sellyourboat.io, a yacht marketplace with a Claude-powered AI search layer; and KompiPay, a Stripe-based payments product. We also build and run our own products, so we make real product and technical decisions with our own money on the line.
Beyond project work, Wall & Fifth acts as an embedded partner for founders who want senior product and engineering involvement over time, from £8,000/month. Whether you are launching a new venture, rebuilding a platform, or adding AI to an existing product, we scope it, price it fixed, and build it as software you own.