Discover the top SEO agencies in United Kingdom. Compare services, reviews, and find the perfect agency for your business.
Birmingham, United Kingdom
Based in Selly Oak, Birmingham, at The Old Bus Garage on Harborne Lane, Odyssey New Media is a small digital agency working with businesses seeking t…
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Preston, United Kingdom
A small digital marketing company based in Preston, England, Off Piste works with businesses seeking greater visibility online. The team, made up of…
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Basildon, United Kingdom
Based in Basildon, Essex, Off The Peg Design has worked in web design and internet marketing since 2001, serving small businesses and startups throug…
View ProfileMerseyside, United Kingdom
Based in Merseyside, Ogendo Media is a small digital marketing agency operating as a family business, conceptualised in 2015 by the Ogendo family. Th…
View ProfileLondon, United Kingdom
Oktopus Tech is registered in London, England, though its service focus and website content center on Pakistan, where it positions itself as a digita…
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London, United Kingdom
Based in London, Olive IT Ltd is a small software development team, with between one and ten staff, working across custom AI applications, full-stack…
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Manchester, United Kingdom
Oliver Carding is a Manchester-based marketing consultant working with crypto, fintech and B2B tech companies, operating as a one-person practice rat…
View ProfileMobberley, United Kingdom
Based in Mobberley, Cheshire, this is a one-person consultancy operating under the name Oliver Smith (OJS Web), serving both established businesses a…
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London, United Kingdom
With offices on New Broad Street in London and a second base in Hyderabad, India, Open Link Systems operates as a multi-service provider founded in 2…
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London, United Kingdom
Based in Camden, London, this small studio has operated since 2004, serving a mix of schools, galleries, charities, universities and established orga…
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Cheadle Hulme, United Kingdom
Based in Cheadle Hulme and operating from Manchester, Omnia Agency LTD is a small digital marketing team (1-10 staff) specialising in SEO for the iGa…
View ProfileLondon, United Kingdom
OmniFound is a small SEO and web design agency based in London, working with businesses across the UK, from local shops, practices and trades to ambi…
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United Kingdom
Omnis Data is a UK-based digital marketing agency specializing in innovative data-driven solutions designed to elevate businesses in the digital land…
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London, United Kingdom
Based in London, Omnius works as a B2B SEO and AI search marketing agency focused specifically on SaaS and Fintech companies, ranging from venture-ba…
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United Kingdom
Based in London and Leicester, ON Digital is a small UK team (1-10 people) working with ecommerce brands built on Shopify. It positions itself as a S…
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Stretford, United Kingdom
Founded in 2015, One Agency Media Ltd operates from Stretford and Trafford Park in Manchester, working across the North West and beyond as a full-ser…
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Southend-on-Sea, United Kingdom
Based in Southend-on-Sea, One Base Media Ltd works specifically with UK trades businesses, including roofers, landscapers, plumbers, heating engineer…
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United Kingdom
One of One Group is a UK-based digital agency specializing in a range of services including SEO and web development. They focus on delivering tailore…
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London, United Kingdom
Based in London, this small agency (team of 1-10) works exclusively with organisations in healthcare and life sciences, including private care provid…
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Droxford, United Kingdom
Based in Droxford and serving businesses across Hampshire and Berkshire, One2create is a small, in-house team of designers, developers, marketers and…
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The complete migration playbook: what to freeze before launch, how to build a redirect map that actually holds, what to test on the staging site, and how to read the first eight weeks after go-live.
2026-08-02 · 12 min read
How B2B search really works: bottom-of-funnel pages before blog volume, comparison and alternatives content, product-led assets, and attribution that survives a six-month cycle.
2026-08-02 · 11 min read
When template-generated pages work, when they get ignored, and how to build a programmatic set that survives quality updates: real data, real demand, real internal linking.
2026-08-02 · 11 min read
This directory lists 3,907 agencies in United Kingdom, spread across 918 cities. 3,443 of them publish a direct contact (email or phone). The best-represented cities are London (722), UK (191), Manchester (123).
| Team size | United Kingdom | What it means |
|---|---|---|
| 1-10 | 2,948 (75%) | One contact, often the founder. Responsive, limited capacity. |
| 11-50 | 429 (11%) | Specialists per discipline. The most common trade-off. |
| 51-200 | 10 (0%) | Several teams, formal process, higher budgets. |
| 200+ | 22 (1%) | International structure, enterprise accounts. |
Across the 3,907 agencies in this country: SEO (94%), Web Design (65%), SEA/PPC (50%), Social Media (47%), Content Marketing (44%), Web Development (38%). SEO leads with 3,655 agencies.
Stated engagement floors in United Kingdom range from $1,000+ to $100,000+. The most common is $1,000+ (953 agencies). That figure is an entry floor, not a price: it says what size of engagement the agency will take on, which stays the fastest filter for ruling out the ones that do not match your scale.
The 3,907 agencies on this page are ordered by how complete their listing is, not by payment: nobody buys a position here. The information comes from each agency's own website, checked as live. An agency can claim its listing to correct or complete it.
Should you pick an agency based in United Kingdom? Proximity matters most for local SEO and the language your content is written in. Here, English and Spanish are the most declared working languages. For an international site, where the agency sits matters less than its experience in your market.
Small or large agency? 75% of agencies here have fewer than ten people, against 32 above fifty. A small team means direct access to the people doing the work; a large one absorbs heavier programmes without depending on one person.
What to check before signing? Ask for measured results on a site comparable to yours, who actually does the work, and what happens when the contract ends: deliverables and access must stay yours. An agency that will not show its method is selling a black box.
