(React Development)

React & Next.js
websites built
for performance.

WebAnts is a London React development agency building custom React apps, Next.js marketing sites, and SaaS dashboards, delivered 1.8× faster, no prepayment required.

★★★★★ 4.9 on Google★★★★★ 5.0 on ClutchTop Web Designers 2025, DesignRush

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Tell us about your
React project.

Flat written quote, same day.

What we do

WebAnts is a London web design and development agency specialising in React and Next.js development. We build custom React applications and Next.js marketing sites for startups, SaaS businesses, and agencies worldwide.

TypeScript throughout. Clean architecture. No offshoring, no prepayment, and no account-manager ping-pong, you work directly with the developer building your product.

100+

websites & apps shipped

1.8×

faster than industry average

4.9★

rated on Google, Clutch & Upwork

£0

deposit, milestone payments only

React services

Everything React,
done properly.

Custom React Applications

Full-stack React apps with authentication, data fetching, and complex state management. Built with Next.js for SEO, performance, and edge delivery.

Next.js Marketing Sites

Server-rendered marketing sites with outstanding Core Web Vitals, structured data, and sitemap, ranking-ready from day one.

SaaS Dashboards & Portals

Data-rich dashboards, admin panels, and client portals with real-time updates, role-based access, and Stripe billing integration.

React + Headless CMS

Next.js front end connected to Sanity, Contentful, or WordPress as a headless CMS, so your marketing team can publish without touching code.

API Integration

Connect your React app to Stripe, Supabase, Airtable, or any REST/GraphQL API. Type-safe, documented, and tested.

React Performance Optimisation

Bundle analysis, lazy loading, caching strategies, and Web Vitals auditing for existing React apps that have grown slow.

React Migration

Moving from legacy jQuery, Vue, or Angular to a modern React/Next.js stack, without downtime, without losing SEO equity.

TypeScript Refactoring

Adding TypeScript to an existing JavaScript React codebase for better reliability, autocomplete, and long-term maintainability.

How we work

Four phases.
No mystery.

Discovery

A free 30-min call to scope your app architecture, data model, auth strategy, and integrations. You receive a written proposal and flat quote the same day.

Design

Figma wireframes then polished designs at component level. We confirm each key screen before moving to build, no big-reveal surprises.

Build & QA

TypeScript throughout. Weekly staging deploys. Unit and integration tests. Core Web Vitals pass before we call it done.

Launch & Handover

Vercel or your host of choice. CI/CD pipeline from day one. Full GitHub repo handover and a walkthrough of the codebase.

What you get

Deliverables

↳Source code on GitHub, you own it fully
↳TypeScript throughout
↳Figma design files
↳Core Web Vitals pass (LCP < 2.5s)
↳Unit and integration test suite
↳CI/CD pipeline (GitHub Actions)
↳Vercel / Netlify deployment
↳Two weeks post-launch support

Toolkit

React
Next.js
TypeScript
Tailwind CSS
Framer Motion
Vercel
Supabase
Stripe
Sanity
GraphQL
Prisma
Zod

Who we build for

React for every
type of business.

Media & Publishing

Headless CMSSSR

Internal Tooling

PortalsAdmin panels

Agencies (White Label)

NDAYour branding

FAQs

Common
questions.

React or Next.js, which do you use?

We default to Next.js for almost every project because it gives you React plus server-side rendering, file-based routing, API routes, and edge delivery in one framework. For internal tools or SPAs with no SEO requirements, plain React (Vite) may be more appropriate, we'll advise on the discovery call.

Do you build SPAs or server-rendered apps?

Both. We use Next.js App Router for server-rendered sites where SEO and Core Web Vitals matter. For dashboards, portals, and internal tools where SEO is irrelevant, we build client-side SPAs.

Can you work with our existing React codebase?

Yes. Whether you need new features added, a performance overhaul, a TypeScript migration, or a refactor of legacy code, we can work within your existing repo and coding standards.

How much does a React website cost?

A Next.js marketing site starts from around £3,000. A SaaS dashboard or web application with auth, billing, and data layers typically starts from £10,000. We provide a flat written quote after a free discovery call.

Do you set up CI/CD and deployment?

Yes. Every project ships with a GitHub Actions workflow, Vercel (or your preferred host) deployment, branch preview environments, and environment variable management.

What hosting do you recommend?

Vercel for Next.js projects, it's purpose-built for the framework and offers edge delivery, preview deployments, and analytics. For projects requiring more infrastructure control, we configure AWS or a VPS with Docker.

Get started

Ready to build your
React project? →

Free 30-minute discovery call. Flat written quote. No prepayment.

Book a free call See our work

WebAnts Ltd · London, UK · hello@webants.io · +44 20 3983 9795

Client stories

4.9★ across Google, Clutch & Upwork. 100+ projects. 14 countries.

“WebAnts built something better than I'd ever imagined — shipped faster than any agency I've worked with.”

LaTisha Ebanks North Pointe Marketing

Dr. Nadish Ravindran

Founder · Elite Scholars

“The team were methodical, fast and honest. Exactly what we needed. No surprises, just results.”

Guillaume Etlin Bro Bread

“We ranked #1 in three London postcodes within 90 days of launching with WebAnts. The ROI has been remarkable.”

Ahmed Hassan Papa Doner

Rachel Piccoli

Founder & CEO · Humming Bliss Acres

“WebAnts delivered our marketing site faster than any agency we'd worked with before. Clean build, great communication throughout.”

Patrick Bishop ReRoute Americas

“Incredible attention to detail. The site launched under budget and our leads doubled in the first month.”

Tom Walker Access Super