Reviews updated: 11-07-2026

The best SEO agencies in the United Kingdom

Choose from the 7 agencies selected and listed below
Each agency is evaluated by our team, and only reviews confirmed by their author count towards the score. Sponsored positions are always labelled.See our methodology
4,8/5 on Trustpilot · 704 reviews

All SEO agencies in the United Kingdom

TASK Agency
Located in Walgrave
Founded in 2019
3 team members
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TASK Agency is based in Northampton, United Kingdom, specialising in marketing solutions by understanding the essence of brands and connecting them to their audience. Founded in 2019, they aim to elevate
Allocation
WebsiteSocial MediaSEOContent Marketing

Quality

Not rated

WITH PR
Located in Greater London
34 team members
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Overview With is an international B2B public relations and digital marketing agency. It supports its clients across three areas: building brand awareness, generating demand and managing reputation. The
Allocation
BrandingSocial MediaSEOPublic Relations

Quality

Not rated

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SEO Results4u Ltd
Located in Hollywood
2 team members
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SEO Results4u Ltd is a search engine optimization company based in Birmingham, UK. They aim to deliver improved search engine rankings and generate a healthy return on investment for their
Allocation
SEOAdvertising

Quality

Not rated

STEEL London
Located in London
47 team members
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STEEL London is a digital marketing agency based in the UK, offering various marketing solutions. The agency focuses on creative and intelligent strategies tailored to client
Allocation
Social MediaSEODigital MarketingAdvertising

Quality

Not rated

OCPR
Located in Sheffield
Founded in 2017
16 team members
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Overview OCPR is a digital communications agency offering integrated services to amplify digital presence. The agency works with a varied clientele, from innovative startups to recognised international
Allocation
Web DevelopmentBrandingCloud ComputingSocial Media

Quality

Not rated

Purplex Marketing
Located in Weston-super-Mare
54 team members
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Overview Purplex Marketing is a full-service agency specialising in the construction, building products and home improvement sectors. The agency supports ambitious businesses in building memorable brands,
Allocation
Social MediaSEOPublic RelationsContent Marketing

Quality

Not rated

LEWIS Creative Consultants
Located in Edinburgh
Founded in 1973
27 team members
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Overview TEAM LEWIS is an integrated marketing and communications agency founded in 1990. The agency operates on a global scale and provides marketing and communications services for brands across a
Allocation
WebsiteSocial MediaSEOVideo

Quality

Not rated

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SEO agencies by location

Main cities

Aberdeen (6)Belfast (17)Birmingham (75)Bradford (84)Brighton (32)Bristol (50)Cambridge (12)Cardiff (34)Coventry (67)Derby (46)Derry (4)Dundee (4)Edinburgh (22)Glasgow (28)Leeds (81)Leicester (50)Lisburn (18)Liverpool (45)London (298)Manchester (143)Milton Keynes (31)Newcastle Upon Tyne (11)Newport (51)Nottingham (47)Oxford (19)Plymouth (5)Portsmouth (19)Reading (38)Sheffield (53)Southampton (25)Swansea (6)York (56)

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