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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

Omobono
Social Media Marketing · Search Engine Optimization · Web Development
Omobono is the creative and technology agency that powers global business brands.
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Kota Creative
Social Media Marketing · Search Engine Optimization · Web Development
Kota is a progressive and insightful design agency, technically and creatively skilled to translate your brand into its best digital self.
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Ancoris Limited
Web Development · Web Design · Software Testing
Unlock your potential and become an agile digital business Ancoris has won many awards for helping organizations deliver game-changing transformations to the way they work.
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August Media
Social Media Marketing · Search Engine Optimization · Web Development
We are an award-winning creative content agency forming part of Publicis UK along with Poke London, Publicis London, and Vivid Brand.
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Siren Design
Social Media Marketing · Web Development · Web Design
Design. Purpose. We’re Siren, a 25-strong team working in Soho, building brands and relationships all over the world.
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Tradeprint
Search Engine Optimization · Web Development · Web Design
Tradeprint is an online trade printer working exclusively with the trade, providing the right print products at the best prices.
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Flaunt Digital
Mobile App Development · Social Media Marketing · Search Engine Optimization
Flaunt Digital is an honest and innovative digital marketing agency based in Leeds, specialising in inbound marketing, video production, SEO, Content Marketing, Biddable Media, Web…
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Pixelter
Web Development · Web Design · UI/UX Design
We help eCommerce sites grow online sales with mobile-first conversion optimization.
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Tribal Worldwide London
Mobile App Development · Social Media Marketing · Search Engine Optimization
Tribal is a Total Experience agency. Thinking beyond the established customer experience, we work with brands to consider the total experience – online, offline and internal…
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Dotmatics
Web Development · Web Design · IT Services
Dotmatics is a leading global scientific informatics software and services provider, delivering solutions tailored to the modern, highly collaborative and mobile scientific…
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ubisend
Artificial Intelligence - AI · Web Development · Web Design
ubisend is the leading artificial intelligence solution developing company. We deliver intelligent, on-demand RPA, AI, and conversational solutions.
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Bmore
Social Media Marketing · Search Engine Optimization · Web Development
bmore creative is a full-service agency that specialize in digital innovation.
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Realla
Social Media Marketing · Web Development · Web Design
Launched in summer 2016, Realla is a free-to-list search engine for commercial property. It displays the largest public index of available commercial real estate in the UK.
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Red Hat
Web Development · Web Design · IT Services
Red Hat is the world’s leading provider of enterprise open source solutions, using a community-powered approach to deliver high-performing Linux, cloud, container, and Kubernetes…
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Parallax Agency Ltd
Search Engine Optimization · Web Development · Web Design
Parallax is a digital agency based in Leeds and London. With clients all over the world and a passion for everything digital, we are growing fast and committed to providing…
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Wake Trade Technologies Ltd
Artificial Intelligence - AI · E-Commerce Development · IT Services
We are a technology-based company using a combination of systematic processes to advise investors across asset classes.
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alphaWerk
Web Development · Web Design · E-Commerce Development
We deliver polished and user-friendly applications that cover all aspects of your business' processes.
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DocuSign
IT Services · Automation Engineer · eCommerce
Since its inception in 2003, DocuSign has been on a mission to accelerate business and simplify life for companies and people around the world.
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RCH Solutions
Artificial Intelligence - AI · Web Development · IT Services
RCH Solutions (RCH) is a global provider of computational science expertise, helping Life Sciences and Healthcare companies of all sizes clear the path to discovery.
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Rawnet
Mobile App Development · Social Media Marketing · Search Engine Optimization
We work with determined brands that strive to be the example of their sector in digital.
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ionCube Ltd
Search Engine Optimization · Web Development · Web Design
In 2002 ionCube introduced tools to protect software written using the PHP programming language from being viewed, changed, and run on unlicensed computers.
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Bango
Mobile App Development · Web Development · Web Design
App developers, merchants and payment providers cross the threshold into the Bango ecosystem to converge, grow and thrive.
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Kleecks
Mobile App Development · Social Media Marketing · Web Development
Kleecks is an enterprise service, a real SEO game-changer. It is the perfect balance between technology and marketing!
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DIGIPHARM
E-Commerce Development · IT Services · Software Testing
Healthcare payments globally are moving to a ‘value-based’ approach - meaning the cost of treatment or services is based on performance and patient benefits.
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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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Top Software Development Companies in the UK

Omobono

Kota Creative

Ancoris Limited

August Media

Siren Design

Tradeprint

Flaunt Digital

Pixelter

Tribal Worldwide London

Dotmatics

ubisend

Bmore

Realla

Red Hat

Parallax Agency Ltd

Wake Trade Technologies Ltd

alphaWerk

DocuSign

RCH Solutions

Rawnet

ionCube Ltd

Bango

Kleecks

DIGIPHARM

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How many software development companies are there in the UK?

How is this ranking worked out?

What else do firms in the UK offer?

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

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