Top Search Engine Optimization Companies in the UK

Between them, the 171 IT service providers on this page cover web development (149), web design (148), SEO (126) and UI/UX design (107). They also list work in London. 167 of them have written a profile you can read before you get in touch.

1. 49

   

   Smart Cookie Design Ltd

   Mobile App Development · Web Development · Web Design

   Smart Cookie Design is an Ecommerce specialist agency and Shopify Experts helping businesses of all sizes grow online. Based in London.

   Write a review
2. 50

   

   Avenir Business Solutions

   Custom Software Development · Web Development · Web Design

   Avenir Business Solutions is a UK based Software Development and IT Consulting company founded in 2005.

   Write a review
3. 51

   

   PassivSystems

   Web Development · Web Design · UI/UX Design

   Since 2008 PassivSystems have been at the forefront of developing leading-edge smart-home technology for the mass market.

   Write a review
4. 52

   

   Enigma Interactive

   Mobile App Development · Custom Software Development · Web Development

   Enigma is a specialist digital development agency. We help our clients establish highly effective digital strategies, we run digital transformation programs, and web design & build…

   Write a review
5. 53

   

   Chrysalis Technology

   Mobile App Development · Web Development · Web Design

   Chrysalis Technology is a company born not just out of ambition, passion, and success; it’s a company born from a desire to succeed, to deliver and to help customers maximize the…

   Write a review
6. 54

   

   GIMO Global Interactive Marketing Online Ltd

   Social Media Marketing · Mobile App Development · Web Development

   We began life in 2006 as a collective of six entrepreneurial spirits. Now we have close to 200 employees in the UK, who are the best at what they do.

   Write a review
7. 55

   

   Sutton Silver

   Social Media Marketing · Mobile App Development · Web Development

   Sutton Silver is a web design and digital marketing agency based in Chester.

   Write a review
8. 56

   

   Clicky Media

   Social Media Marketing · Mobile App Development · Web Development

   Clicky is an award-winning, digital marketing agency with offices in Chester, Nottingham, and London.

   Write a review
9. 57

   

   One Agency Media Ltd

   Social Media Marketing · Mobile App Development · Web Development

   We are One Agency Media. We work with and for a variety of clients to build their brand, customer base, and profit through strategic, accountable and measurable advertising media…

   Write a review
10. 58

    

    Adzooma

    Social Media Marketing · Mobile App Development · Web Development

    Adzooma is an all-in-one platform that allows you to track, analyze, optimize and increase the profitability of your digital marketing campaigns.

    Write a review
11. 59

    

    Hat Trick Media

    Social Media Marketing · Mobile App Development · Web Development

    Based in Lincolnshire, near Nottingham, Leicester, Peterborough, and Lincoln, Hat Trick Media provides email marketing, web development, systems software & web apps for a broad…

    Write a review
12. 60

    

    BPL Marketing

    Mobile App Development · Web Development · Web Design

    BPL exists to improve your marketing effectiveness across multiple channels.

    Write a review
13. 61

    

    Optix Solutions

    Social Media Marketing · Web Development · Web Design

    Optix Solutions is a leading Digital Marketing Agency based in Exeter, Devon. We specialize in providing strategic digital insight and helping clients with their unique challenges.

    Write a review
14. 62

    

    RLDatix

    Web Development · Web Design · UI/UX Design

    RLDatix is on a mission to change healthcare. We help organizations drive safer, more efficient care by providing governance, risk and compliance tools that drive overall…

    Write a review
15. 63

    

    EchoMany

    Web Development · Web Design · UI/UX Design

    EchoMany breathes extra life into your digital marketing – helping you dramatically increase conversion rates, enrich customer relationships and improve brand loyalty.

    Write a review
16. 64

    

    Visualsoft Ltd

    Social Media Marketing · Mobile App Development · Web Development

    A pioneer of eCommerce, we help retailers grow their business online. How? Through our unrivaled platform coupled with our online marketing and support. Visualsoft. eCommerce.

    Write a review
17. 65

    

    PureClarity

    Social Media Marketing · Web Development · Web Design

    Founded in 2014, PureClarity is an award-winning personalization platform that offers both B2C and B2B companies a powerful, easy-to-manage and affordable eCommerce personalization…

    Write a review
18. 66

    

    MerchantCantos

    Web Development · Web Design · UI/UX Design

    We are an international, creative communications agency. And we understand how business works.

    Write a review
19. 67

    

    Psittacus Systems

    Mobile App Development · Web Development · Web Design

    Psittacus Systems is one of the UK’s leading Software Development Companies, who have developed the ONLY Online Learning System which cannot be cheated or manipulated.

    Write a review
20. 68

    

    Ascensor Digital Agency

    Social Media Marketing · Mobile App Development · Web Development

    Our web design, eCommerce and digital marketing services are constantly evolving, pushing boundaries and delivering exceptional results.

    Write a review
21. 69

    

    AVADO

    Web Development · Web Design · SEO

    With an active online community of over 20,000 students, AVADO is the UK’s largest distance learning provider for professional qualifications.

    Write a review
22. 70

    

    LogicSpot

    Mobile App Development · Web Development · Web Design

    We are a full-service digital agency based in Richmond, London, with a focus on e-commerce.

    Write a review
23. 71

    

    Limely

    Social Media Marketing · Mobile App Development · Web Development

    We are a close-knit team of designers, developers, and online marketers.

    Write a review
24. 72

    

    Queensborough Group

    Social Media Marketing · Mobile App Development · Web Development

    We started off as an internet services company in 1995. We built out the first Accommodation Directory HOTELS UK which performed very well and still does on the first page of…

    Write a review

Articles

Related reading

Articles on this subject first, then the newest.

All articles

United Kingdom

17 Sept 2026 · TrustList Editorial

Startup funding in the UK: the 2026 guide for founders

SEIS, EIS, VCTs, R&D tax relief, Innovate UK, British Business Bank programmes, angel networks and London accelerators: how UK startup…

Search Engine Optimization

17 Sept 2026 · TrustList Editorial

How to choose an SEO agency: the 2026 buyer's guide

What legitimate SEO work involves, what Google's spam policies say to avoid, the questions Google suggests asking, and how to keep control…

Shopify

15 Jul 2026 · Pritesh Vegad

Shopify Plus vs Adobe Commerce: A 2026 comparison guide

In the quick running world of eCommerce , picking the most suitable enterprise platform can genuinely make or break your digital success.…