The Website Factory London
  1. Home
  2. Services
  3. Web Development
Design & build

Web development for sitesthat need to do more

Sometimes the design is fine but the site is slow, fragile or stuck on an old platform. We take on existing websites and make them work properly, and we build new front and back ends when a site needs real functionality.

In short

What you get

  • Performance, security and accessibility fixes on sites we didn't build
  • Custom features: booking, members' areas, portals, integrations
  • Migrations between platforms without losing content or rankings

We're happy to inherit someone else's code

A lot of our development work starts with a site another agency built and then walked away from. We audit what's there, tell you plainly what's worth keeping, and fix the problems in order of impact: speed first, then security, then the things that annoy your customers.

Functionality beyond the brochure

Online booking, quote calculators, secure client areas, document uploads, payment flows, integrations with your CRM or accounting software. If your site needs to do a job rather than just describe one, we build that job in, and we build it to be maintainable by whoever comes after us.

Platforms we work with

Plain HTML, CSS and JavaScript for sites that should be fast and simple. PHP and WordPress where editing matters. Python and the Frappe framework for application-heavy builds. Moodle for learning platforms. We choose by fit, not by habit.

What's included

Everything in scope.Nothing hidden.

  • Technical audit of your current site
  • Prioritised fix list with plain-English explanations
  • Speed and Core Web Vitals improvements
  • Security hardening and backups
  • Custom feature development
  • Platform migrations and redirects
Questions people ask

Before you email

Talk to us about Web Development

Email a few lines about what you need. The first conversation is free and there's no time limit.

Send an email
My site is slow. Can you fix it without rebuilding?

Usually. Image optimisation, caching, cleaning up plugins and hosting changes often make a dramatic difference. We'll tell you if a rebuild is the better value.

Do you work with WordPress?

Yes, extensively, including custom themes and plugins. We also help people move away from WordPress when it's the wrong tool.

Will a migration hurt my Google rankings?

Not if it's done properly. We map every old URL to its new home with permanent redirects and check search console after launch.

Tell us what you're trying to do. We reply within one working day, and the first conversation is free with no time limit.

124 City Road, London EC1V 2NX, United Kingdom