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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

Arcadia
Mobile App Development · Custom Software Development · Web Development
Arcadia has 25 years of expertise in designing and building custom software systems.
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Webdesign7
Social Media Marketing · Custom Software Development · Web Development
Webdesign7 is a digital website design studio delivering digital business solutions for all business of all types and sizes.
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Sugar Rush Creative
Mobile App Development · Web Development · Web Design
Sugar Rush Creative is an award-winning agency with a team of talented graphic designers, web designers and app developers.
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Opus Online
Mobile App Development · Web Development · Web Design
From building information systems and large online stores to professional websites and mobile apps - custom software development is our core expertise.
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Supersonic Playground Ltd
Custom Software Development · Web Development · Web Design
Design to propel your business. We combine creativity, design, and technology to help businesses grow their market share by positioning them as the best in their field.
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HYDROSOFT Veleslavín s.r.o.
Web Development · UI/UX Design · Software Testing
INDUSTRIA is an award-winning global consultancy and development firm that creates blockchain and fintech solutions for large enterprises and ecosystems.
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StressFree Sites
Social Media Marketing · Custom Software Development · Web Development
StressFree Site is a digital consultancy based in London, Dubai, and Hong Kong. Since 2011 we have been improving the digital components of our client's businesses.
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Regent Branding
Search Engine Optimization · Custom Software Development · Web Development
Regent Branding is a digital marketing agency that offers people quality online exposure.
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Gismart
Custom Software Development · Web Development · Web Design
Gismart develops music entertainment apps and games for mobile.
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TruRating
Web Development · Web Design · UI/UX Design
We're changing the way the world gains insight. Our innovative, multichannel feedback solution at checkout enables businesses to easily track how customers feel against how much…
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AnyData Solutions
Custom Software Development · Web Development · Web Design
Our age is defined by exponentially growing data and rapid market change.
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Kagool
Mobile App Development · Custom Software Development · Web Development
Kagool is an award-winning digital agency and top tier, Sitecore Platinum Partner. We have offices in Cardiff, Manchester, and London.
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NetMonkeys Ltd
Mobile App Development · IT Services · Mobile Platforms
NetMonkeys Ltd is a business applications & technology company based in the heart of Manchester's creative hub, the Northern Quarter.
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Razor Ltd
Search Engine Optimization · Custom Software Development · Web Development
We co-create digital products and systems for transformational impact. Using our broad experience of software and design, we make the complex simple.
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Cyber Noise
Mobile App Development · Custom Software Development · Web Development
Cyber Noise is a London based, boutique software development company. We specialize in the design and development of bespoke software, both web, and mobile, for startups.
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Luminos Software
Mobile App Development · Search Engine Optimization · Custom Software Development
Luminos helps entrepreneurs and entrepreneurially-minded companies create exceptional digital products and transform their businesses for the future.
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Encompass Corporation
Web Development · Web Design · HTML5
encompass is the creator of Know Your Customer (KYC) automation software for the banking, finance, legal and accountancy sectors.
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Suffescom Solutions
Web Development · Web Design · Mobile Platforms
Suffescom Solutions Pvt. Ltd. is an IT firm located in beautiful Chandigarh, India.
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New Signature UK
Mobile App Development · ERP Software Development · Mobile Platforms
New Signature is the world’s leading pure-play Microsoft cloud partner. We help organizations leverage the power of the public and hybrid cloud.
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Coyote Software
Custom Software Development · Web Development · Software Testing
What is Coyote? Coyote is a market-leading commercial property platform. What does Coyote do? Coyote has two modules Coyote Market and Coyote Managed.
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PortSwigger Web Security
Web Development · Web Design · .NET
PortSwigger Web Security is a global leader in the creation of software tools for security testing of web applications.
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Degree 53
Mobile App Development · Custom Software Development · ERP Software Development
We're a leading technology provider, specializing in the development of bespoke gambling and betting platforms, web and mobile solutions, as well as UX, design and consultancy…
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Apps.London Ltd
ERP Software Development · Web Development · Web Design
Phocas Software is top-ranked in 34 categories in the world's largest business intelligence software survey, BARC's The BI Survey 19.
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Intercept IP
Social Media Marketing · Search Engine Optimization · ERP Software Development
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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

Arcadia

Webdesign7

Sugar Rush Creative

Opus Online

Supersonic Playground Ltd

HYDROSOFT Veleslavín s.r.o.

StressFree Sites

Regent Branding

Gismart

TruRating

AnyData Solutions

Kagool

NetMonkeys Ltd

Razor Ltd

Cyber Noise

Luminos Software

Encompass Corporation

Suffescom Solutions

New Signature UK

Coyote Software

PortSwigger Web Security

Degree 53

Apps.London Ltd

Intercept IP

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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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