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Web App Development · London

Web Application
Development in London

We build custom web applications for UK startups and SMEs — secure, well-architected, and built to last. From internal tools to customer-facing platforms, delivered on a fixed price and timeline.

London-based team Security-first builds Fixed-price contracts 100% code ownership 6–14 week delivery
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Types of web applications we build in London

We build custom web applications for a wide range of use cases — from internal business tools to multi-user customer platforms. Every project starts with a clear scope and ends with full code handover.

Customer-facing

Customer portals

Booking systems, client dashboards, order management, and self-service portals — built for the end user, not just the admin.

Internal tools

Business operations

CRM-connected tools, workflow automation, reporting dashboards, and internal approval systems that replace manual spreadsheet processes.

Marketplace

Two-sided platforms

Platforms connecting buyers and sellers, service providers and clients, or employers and candidates — with separate dashboards, verification flows, and payments.

Data

Reporting & analytics apps

Custom dashboards pulling from multiple data sources, presenting the right metrics to the right people in a clear, actionable interface.

What's included in every web application we build

We don't charge extra for the basics. Every web application we build includes these as standard:

Security

Security as standard

HTTPS, hashed passwords, CSRF protection, SQL injection prevention, and rate limiting on all auth endpoints — from day one, not as an afterthought.

Responsive

Mobile-responsive UI

Every interface works properly on phones, tablets, and desktops. We test on real devices, not just browser resize.

Performance

Fast load times

Optimised queries, proper caching, and efficient frontend delivery. We don't ship slow applications.

Handover

Full documentation

Technical docs, deployment guides, and admin instructions so your team can manage the application after we hand it over.

Web application development costs in London (2026)

These are realistic ranges based on actual projects. Every quote we give is fixed-price — you won't receive surprise invoices at the end of the build.

Simple tool
£5k – £15k
Single user type, core workflow, basic admin. 6–8 weeks.
Business application · Most common
£15k – £40k
Multiple roles, integrations, dashboards, notifications. 10–14 weeks.
Complex platform
£40k – £80k
Multi-tenant, real-time, marketplace, advanced reporting. 14–20 weeks.

Technology stack for web application development

Backend

Laravel / Django / Node.js

Proven frameworks with strong security track records and large UK developer communities.

Frontend

React / Vue / Next.js

Fast, component-based interfaces with accessible, semantic HTML output.

Database

PostgreSQL / MySQL

Relational databases designed properly from the start — no schema migrations forced by poor planning.

Hosting

AWS / Render / Railway

Managed deployments with auto-scaling, backups, and monitoring. No self-managed servers.

Frequently asked questions

How much does web application development cost in London?
A straightforward web application with authentication, core features, and admin costs £5,000–£15,000. A more complex application with multiple roles, integrations, and advanced features runs £15,000–£40,000. All our projects are fixed-price — no surprise invoices.
How long does it take to build a web application?
Most projects take 6–14 weeks depending on scope. Simpler tools with a clear feature set can be completed in 6–8 weeks. Complex applications with multiple user types and integrations take 10–16 weeks. We build in two-week sprints with demos so you see progress throughout.
What technologies do you use?
We primarily use Laravel and Django for backend development, with React, Vue, and Next.js for frontend interfaces. We deploy on AWS, Render, or Railway. We choose the stack based on your project requirements and what will be easiest for your team to maintain long-term.
Do you build secure web applications?
Yes. Every application includes HTTPS, hashed passwords, CSRF protection, SQL injection prevention, and rate limiting as standard. We can also conduct security reviews of existing applications built by other agencies.
Do we own the code?
Yes, 100%. You receive full ownership of all source code, database schemas, and infrastructure configurations at handover. No licensing fees, no lock-in, no conditions.

Let's build your web application.

Book a free 30-minute discovery call. We'll review your requirements, give you an honest cost estimate, and outline a clear delivery plan.

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