Old.St Labs

Building a digital product is one of the highest-stakes decisions a business makes. You're committing time, money, and reputation to a partner who needs to understand not just the brief, but the business behind it. That's the bar we set for ourselves. Old.St Labs was founded by two operators. We'd both sat on the client side of software projects and knew what it felt like to hand something you cared about to a team that was technically capable but commercially disconnected. So we built the agency we wanted: one that starts with the business problem and works back to the software. Six years and more than 60 delivered products later, that's still the difference clients notice first. We're known for discovery and scoping, for understanding what actually needs building before a line of code gets written. It's why several of our client relationships are into their fourth and fifth years, and why we've picked up multiple Clutch awards along the way. We're living through a fundamental shift in how software gets built, and we're fully in it. Our process is rebuilt around AI tooling and keeps improving as the tools do, which shows up in how quickly we ship. We've delivered a dozen AI-integrated products, from intelligent automation to AI-native applications where the intelligence is the product. And we help clients think clearly about where AI genuinely moves the needle, and where it's just noise. We work with founders, scale-ups, and established businesses across the UK and US. For startups, that might mean a first build or taking a promising prototype to production grade. For established businesses, it's often replacing ill-fitting SaaS, automating manual workflows, or rebuilding ageing custom software. Web platforms, mobile apps, and AI-integrated products, handled end to end by a team of 50. If you have something meaningful to build, we'd love to hear about it.