Top IT Service Providers in the UK

Between them, the 575 best-ranked of these 585 IT service providers cover web development (528), web design (473), UI/UX design (336) and IT services (331). They also list work in London and Ahmedabad. 574 of them have written a profile you can read before you get in touch.

1. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
2. –

   

   RCH Solutions

   Artificial Intelligence - AI · Web Development · IT Services

   RCH Solutions works with life sciences and healthcare organisations that depend on computing for research and discovery. It serves companies of all sizes and operates globally.

   Write a review

   On record: In business 27+ years, as stated on its own website, read 6 Oct 2026

3. –

   RI

   Red IT Solutions

   Web Development · Web Design · IT Services

   Red IT Solutions is a UK software company that writes add-on apps and integrations for Sage and Xero accounting software.

   Write a review

   On record: Founded 1999, as stated on its own website, read 6 Oct 2026

4. –

   

   SDL plc

   Web Development · Web Design · UI/UX Design

   SDL plc is a company quoted on the LSE under the ticker SDL that works on content creation, translation and delivery.

   Write a review

   On record: In business 27+ years, as stated on its own website, read 6 Oct 2026

5. –

   

   WDS Mobile

   Web Development · Web Design · UI/UX Design

   WDS Mobile, now presenting itself as WDS-SICAP, supplies technology to mobile operators. Its modules cover mobile, broadband and IoT services, along with subscriber management.

   Write a review

   On record: In business 27+ years, as stated on its own website, read 6 Oct 2026

6. –

   

   Axess Systems Ltd

   Web Development · Web Design · UI/UX Design

   Axess Systems Ltd is a specialist integrator of virtualisation, cloud and Citrix technology.

   Write a review

   On record: Founded 2000, as stated on its own website, read 5 Oct 2026

7. –

   

   Foehn

   Web Development · Web Design · IT Services

   Foehn is a cloud communications provider, now called Kerv Experience, with a history of IP telephony and contact centre work.

   Write a review

   On record: Founded 2000, as stated on its own website, read 6 Oct 2026

8. –

   

   Qulix Systems

   Mobile App Development · Web Development · Web Design

   Qulix Systems is an international firm that develops, tests and advises on software. It started in 2000 and has worked on the global market for over fifteen years.

   Write a review

   On record: Founded 2000, as stated on its own website, read 5 Oct 2026

9. –

   

   Arrk Group

   Web Development · Web Design · UI/UX Design

   Arrk Group is a software development and digital consultancy. Its website describes a track record of about 25 years.

   Write a review

   On record: In business 25+ years, as stated on its own website, read 6 Oct 2026

10. –

    

    Code Computerlove

    Mobile App Development · Web Development · Web Design

    Code Computerlove is a design and technology agency. It works on customer experiences from strategy to build, starting where the client can gain the most and then testing and…

    Write a review

    On record: In business 25+ years, as stated on its own website, read 5 Oct 2026

11. –

    

    Daisy Corporate Services

    Web Development · Web Design · IT Services

    Daisy Corporate Services is the corporate arm of the Daisy group, which was founded in 2001 by Matthew Riley.

    Write a review

    On record: Founded 2001, as stated on its own website, read 5 Oct 2026

12. –

    

    Deeson Group Ltd

    Custom Software Development · Web Development · WordPress

    Deeson Group Ltd is a UK agency that has delivered content-managed websites and digital products since 2001. Its multidisciplinary agile teams work on open-source platforms.

    Write a review

    On record: Founded 2001, as stated on its own website, read 6 Oct 2026

13. –

    

    Endava

    Web Development · UI/UX Design · Digital Marketing

    Public technology company delivering AI-native digital transformation and engineering for finance, healthcare, retail and other sectors

    Write a review

    On record: In business 25+ years, as stated on its own website, read 6 Oct 2026

14. –

    

    Milo Creative

    Mobile App Development · Web Development · Web Design

    Milo Creative is a digital design and development studio that has worked since 2001.

    Write a review

    On record: Founded 2001, as stated on its own website, read 5 Oct 2026

15. –

    

    stickee

    Mobile App Development · Web Development · Web Design

    Stickee is a technology agency that builds software and digital services.

    Write a review

    On record: Founded 2001, as stated on its own website, read 5 Oct 2026

16. –

    

    Strange

    Search Engine Optimization · Web Development · Web Design · Also in London

    Strange is a digital marketing and web development agency. It runs paid and organic marketing campaigns and builds websites, and the stored profile says it has worked with clients…

    Write a review

    On record: In business 25+ years, as stated on its own website, read 5 Oct 2026

17. –

    

    TSI

    Web Development · Web Design · UI/UX Design

    TSI provides business communications technology in the UK, selling largely through channel partners.

    Write a review

    On record: In business 25+ years, as stated on its own website, read 6 Oct 2026

18. –

    

    Rantmedia

    Mobile App Development · Web Development · Web Design

    Rantmedia is a digital studio formed in 2003. It designs and builds digital products for brands, from minimum viable products to enterprise systems.

    Write a review

    On record: Founded 2003, as stated on its own website, read 5 Oct 2026

19. –

    

    Sigma Software Distribution

    Web Development · Web Design · Software Development

    Sigma Software Distribution is an IT distributor that has grown since 2003 by working alongside its vendors and resellers.

    Write a review

    On record: Founded 2003, as stated on its own website, read 5 Oct 2026

20. –

    

    Aquarium Software

    Custom Software Development · Web Development · UI/UX Design

    Aquarium Software was founded in 2006 by a group of technologists who had worked at earlier software firms.

    Write a review

    On record: Founded 2006, as stated on its own website, read 6 Oct 2026

21. –

    

    ASK4 Ltd

    Web Development · Web Design · UI/UX Design

    ASK4 Ltd is an internet service provider that specialises in multi-tenant buildings, particularly student accommodation and build-to-rent housing.

    Write a review

    On record: In business 20+ years, as stated on its own website, read 5 Oct 2026

22. –

    

    Chrysalis Technology

    Mobile App Development · Search Engine Optimization · Web Development

    Chrysalis Technology designs and builds bespoke application and integration software.

    Write a review

    On record: In business 20+ years, as stated on its own website, read 5 Oct 2026

23. –

    

    Connect Auto

    E-Commerce Development · Digital Marketing · Data Science

    Connect Auto works in digital retail for the automotive industry. It links customers with car manufacturers and retailers, and describes itself as a specialist in connected retail.

    Write a review

    On record: In business 20+ years, as stated on its own website, read 6 Oct 2026

24. –

    

    Empowered SMS Limited

    Web Development · Web Design · UI/UX Design

    Empowered SMS Limited is an independent UK business that provides IT services to other IT companies. It has operated since 2006 and works on large IT transformation projects.

    Write a review

    On record: Founded 2006, as stated on its own website, read 6 Oct 2026

25. –

    

    Nominet

    Mobile App Development · Social Media Marketing · Search Engine Optimization

    Nominet runs the .UK domain name registry and has operated at the base of internet infrastructure for over 20 years. It manages more than 13 million .UK domain names.

    Write a review

    On record: In business 20+ years, as stated on its own website, read 5 Oct 2026

Articles

Related reading

Articles on this subject first, then the newest.

All articles

United Kingdom

14 Nov 2026 · TrustList Editorial

UFORCE raises $700m Series A at a $6bn valuation for uncrewed systems

The Ukrainian-founded, London-headquartered defence company says Valor Equity Partners and the UK National Wealth Fund co-led the round,…

Automotive

11 Nov 2026 · TrustList Editorial

Eight of our 22 vehicle recalls were software, and none is fixed over the air alone

We counted 22 recall records in our 104 car, autonomy and robotics reports: 8 are software or firmware faults, 4 of those name a dealer…

United States of America

10 Nov 2026 · TrustList Editorial

Microsoft retires free Office 365 A1 and alumni email for schools

Its replacement for students, Microsoft 365 Education A0, costs nothing extra but leaves out Exchange Online, SharePoint Online and Teams.…