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Top Software Development Companies in the UK

444 IT service providers ranked by rating, review volume and listing quality.

Software development here means building software to order — a product, an internal system, or a replacement for something that has outgrown a spreadsheet. It spans firms that take a specification and deliver against it, and teams that work discovery-first and expect the specification to change.

The distinction worth establishing early is who owns the decisions. A supplier that builds exactly what was asked will deliver exactly what was asked, including the parts that were wrong. A partner that pushes back costs more in meetings and less in rework. Neither is better in the abstract; they suit different buyers and different projects, and the mismatch is where these engagements go wrong.

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Between them, the 443 best-ranked of these 444 IT service providers cover web development (386), web design (346), UI/UX design (207) and mobile app development (169). 434 of them have written a profile you can read before you get in touch.

TrustList ranks more than 400 software development companies in the UK, ordered on client reviews and profile quality, never on payment. At the top right now: Zepto Systems ltd, ADVOX Studio and Multi-Programming Solutions.

What to check before you shortlist a software development company

A discovery or specification phase before a fixed estimate
Who is on the team, and whether they stay for the whole project
That you own the intellectual property and the source code
Testing, documentation and maintenance after release

Filter by fitbudget, engagement, size and more

1000heads
Social Media Marketing · Web Development · Web Design
We are the Word of Mouth People. We help brands to be more social; talk to people, and to be talked about by people.
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Nanos - instant marketing
Artificial Intelligence - AI · IT Services · Machine Learning
We are a team of Swiss-based machine-learning professionals, comprising ex-Disney Researchers and two tech Oscars leadership team members.
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Sensat
Artificial Intelligence - AI · Web Development · Web Design
SenSat turns complex visual and spatial data into a real-time simulated reality that helps computers solve real-world problems.
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GatherContent
Web Development · Web Design · UI/UX Design
GatherContent is a Content Operations Platform that helps teams produce effective content, at scale.
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Smartzer
Web Development · Web Design · UI/UX Design
Smartzer’s interactive video players allow e-commerce companies to generate sales and capture detailed analytics directly from their videos.
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6B
Social Media Marketing · Web Development · Web Design
6B is a digital agency specializing in digital transformation. We design and build websites, apps, bespoke applications, and engaging in marketing campaigns.
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ContractorCalculator
Web Development · Web Design · Frontend
ContractorCalculator (“your expert guide to contracting”) is the UK’s leading website for contractors and freelancers.
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3chillies
ERP Software Development · Web Development · Web Design
3chillies offers a unique blend of communications acumen, creative flair, and technical brilliance.
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Wurkhouse
Mobile App Development · Social Media Marketing · Web Development
Blending passion, creativity, and confidence, Wurkhouse is a creative agency that embodies talent and innovation to produce inventive solutions for our international clients.
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22 Group Ltd
Social Media Marketing · Web Development · Web Design
We’re an independent digital agency focusing on creating stunning, innovative websites and digital campaigns that give our clients a competitive advantage.
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Si digital
Social Media Marketing · Web Development · Web Design
We're a mix of technical and creative minds, developing digital products backed by research and inspired by experimentation.
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Twenty Eighty Online
Mobile App Development · Web Development · Web Design
An Oxfordshire based digital agency offering custom WordPress websites. We also offer a suite of hosting and support solutions.
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CRE8 Marketing & Creative Agency
Search Engine Optimization · Web Development · Web Design
Delivering Marketing Differently, we provide professional marketing, creative solutions and support to local and international businesses, education and legal sectors.
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Mindshare
Social Media Marketing · Search Engine Optimization · Web Development
We believe that in today’s adaptive world everything begins and ends in media.
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Rixxo Ltd
Mobile App Development · Search Engine Optimization · Web Development
We’re Rixxo and we’re an agency hell-bent on grabbing the attention of your audience(s) in a noisy digital world.
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Livelink Technology
Web Development · Web Design · Frontend
LiveLink's products lead the market of digital photo kiosks and online photo ordering systems.
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R & W Media - Magento eCommerce Agency
Web Development · Web Design · UI/UX Design
R & W Media is a leading Magento eCommerce agency, based in the heart of London. Specializing in designing and building custom Magento solutions.
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Adgistics
Mobile App Development · Web Development · Web Design
Adgistics Is The Home Of Intelligent Brands. We’ve been at the forefront of Brand and Digital Asset Management software for nearly two decades.
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Rocket Lawyer
Mobile App Development · Web Development · Web Design
Rocket Lawyer is the only integrated cloud legal service, making the law simple and affordable for everyone.
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Blinx Solutions
Web Development · Web Design · UI/UX Design
Our business is transparent. We enable you to see your business. To cut through the mountains of data to see what’s working well, what isn’t and where the risks are.
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OneUp Sales
Web Development · Web Design · UI/UX Design
OneUp Sales is a sales motivation & management platform designed to help sales leaders create a culture of success & celebration.
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Exient
Mobile App Development · Web Development · Web Design
In 2016, Exient will publish two new mobile titles based on world-renown brands.
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Gould Tech Solutions Limited
ERP Software Development · Web Development · Web Design
Gould Tech Solutions Ltd has provided clients with connectors, integrations, and highly automated systems to support the delivery of fast, accurate, and secure translation and…
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Treatwell
Mobile App Development · Web Development · Web Design
Treatwell is the brighter way to book beauty – whenever you (and by you we mean everyone) have a beauty want or need, we’re here to help you book it easily, quickly and with…
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The order is earned: ratings, verified reviews and listing quality decide it, and nobody can pay to move up. There are two ways to stand out, and each one says what it is.

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How many software development companies are there in the UK?

444 companies on TrustList offer software development and are based in the UK. That makes the UK the number 2 software development market we rank, after the USA.

How is this ranking worked out?

Each firm's position comes from its client reviews and its profile, blended into one score:

Rating, smoothed so a single five-star review cannot outrank a firm with hundreds of good ones
Review volume, with diminishing returns
Profile completeness: the details a buyer needs to judge the firm
Earned trust: verification and awards, as a small lift

No firm can pay for a position. Sponsored listings are labelled and shown apart from this list. How rankings work

What else do firms in the UK offer?

We also rank web development (1,531), web design (1,385) and IT services (871) in the UK.

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Everything here links back to the same verified catalogue. Pick your next stop.

Top Software Development Companies in the UK

1000heads

Nanos - instant marketing

Sensat

GatherContent

Smartzer

6B

ContractorCalculator

3chillies

Wurkhouse

22 Group Ltd

Si digital

Twenty Eighty Online

CRE8 Marketing & Creative Agency

Mindshare

Rixxo Ltd

Livelink Technology

R & W Media - Magento eCommerce Agency

Adgistics

Rocket Lawyer

Blinx Solutions

OneUp Sales

Exient

Gould Tech Solutions Limited

Treatwell

Want to see your company here?

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Sponsor the Software Development ranking

How many software development companies are there in the UK?

How is this ranking worked out?

What else do firms in the UK offer?

Software Development in other countries

Other services in the UK

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Navigating the Selection Process: Tips for Choosing the Right Custom Software Development Firm

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