inparlor.
United KingdomIn LondonGreater London

Web Application Development in London.

Web apps and complex sites that do real work, not just look good. We build for London businesses with a senior team and pricing in GBP.

London market

Web Application Development that fits how London operates.

London is the UK's largest and most diverse commercial centre, anchored by financial services in the City and Canary Wharf and a dense start-up and scale-up scene around Shoreditch, King's Cross and Old Street. Capital, talent and regulation all concentrate here, which raises both the ambition and the compliance bar for the software local firms commission.

London splits cleanly into two software economies that we sit between. In the City and Canary Wharf, regulated finance, insurance and asset-management firms need bespoke internal platforms, client and broker portals, and reporting that holds up to an FCA-minded audit — work where access control, an audit trail and data lineage matter more than a polished marketing site. A few miles east, the Shoreditch and Old Street start-up belt needs the opposite urgency: multi-tenant SaaS, a billing-ready MVP, an AI assistant grounded in real product data, shipped in weeks because a funding round or a competitor sets the clock. The common thread is that London buyers are sophisticated and integration-heavy — almost every brief touches a CRM, a payments provider and a data warehouse already in place. London salaries also make an in-house build expensive, so a fixed-bid senior remote team that invoices in GBP and overlaps UK hours is a pragmatic route to a portal, a Power BI reporting layer or an internal tool that replaces the spreadsheets the business currently runs on.

What we build for London businesses

Scope, line by line.

  • Design system in Figma plus a coded component library
  • Application screens, dashboards, and authenticated views
  • Responsive layouts at 360, 768, 1024, 1280, and 1536 breakpoints
  • Postgres data layer with migrations, plus a CMS layer where public content needs one
  • Authentication and role-based access via Clerk, WorkOS, or Auth.js
  • Typed REST or tRPC API with form handling and spam protection
  • GA4, Plausible, or PostHog analytics setup
  • Sitemap, robots.txt, and OG image generation for public surfaces
  • Lighthouse mobile score of 95+ on public pages at launch
  • Vercel or Hetzner deployment with preview environments and a 30-day post-launch warranty
Compliance

How we handle London data.

We deliver with UK-GDPR and ICO expectations in mind — lawful-basis mapping, data-minimisation, subject-access readiness and a documented processing trail. We build to the controls your DPO or auditor specifies (we are not a law firm), and can scope UK or EU data residency where a workload requires it.

Ready to start?

Get a proposal for web application development in London.

We respond within 48 hours with scope, pricing in GBP, and the team that would run the engagement.

Get a proposal