Web Development in London
We build fast, modern websites, online shops and web apps with React & Next.js — engineered for speed, Google rankings and security. For businesses across London & the UK.
Web development that's fast by design.
Business websites
Fast, beautiful websites that build trust and turn visitors into customers — from a one-page site to a full multi-page build.
Online shops
Smooth, secure ecommerce stores your customers love to buy from — fast catalogues, frictionless checkout, built to convert on mobile.
Web apps
Custom web applications, dashboards and portals on the modern JavaScript stack — type-safe, scalable and ready to grow.
Speed, SEO & Core Web Vitals
Every build ships in green Core Web Vitals with clean, semantic markup and technical SEO — so visitors stay and Google rewards you.
Why build your website with BrainCode?
We're a London development studio that's shipped 600+ projects since 2018. Every website is hand-built from fast React components — not dragged together from bloated templates.
- Senior engineers only — no juniors learning on your budget
- Sub-second loads and green Core Web Vitals on every build
- Technical SEO baked in from day one
- Ongoing support, hosting and updates after launch
Web development — FAQ.
How much does a website cost?
It's priced per project — a one-page landing site and a full online shop are very different jobs. Tell us what you need and we'll send a clear, itemised quote with no hidden extras, usually within a day.
How long does it take to build a website?
A focused marketing site typically takes 2–4 weeks from kick-off to launch; online shops and web apps usually run 6–12 weeks depending on scope. We agree a fixed timeline up front.
Will my website rank well on Google?
We engineer for search from day one: clean semantic markup, sub-second load times, green Core Web Vitals, structured data and a sitemap. That technical foundation, paired with good content, is what wins rankings.
Do you build online shops and ecommerce?
Yes. We build fast, secure online shops with smooth product browsing and a frictionless checkout, designed mobile-first to convert — and easy for you to manage and update.
Do you work with London businesses?
We're based in Sidcup, Bexley and build websites for businesses across London and the whole of the UK. Most work happens remotely with regular calls, so location is rarely a barrier.
Let's build
something fast.
Tell us your idea and we'll come back with a clear plan and an honest price — usually within a day.