Company lists · Data refreshed September 2026
Top 25 SaaS SEO agencies based in the United Kingdom
RevenueBase identified 1,553 SaaS SEO agencies headquartered in the United Kingdom as of September 2026 and tracks 9,232 professional contacts across them, including 2,087 with verified work emails and 529 with mobile numbers. London is the largest hub.
This list covers SaaS SEO agencies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest SaaS SEO agencies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 173 | ||||
“BrightLocal offers local SEO software and services that help businesses get found, chosen, and trusted in their local area.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | The SEO WorksPartial evidence | 98 | |||
“The SEO Works are an award-winning provider of search marketing, websites and paid social for leading brands and prospering SME’s.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 77 | ||||
“At MediaVision, we believe there's potential hidden in every search.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 73 | ||||
“Leading Web Design Agency In the UK and US offering top-notch SEO, SEM, SMO, PPC, Web Design, and Development services worldwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 69 | ||||
“Unlock exceptional business growth with Mabo - an award-winning digital marketing agency specialist in paid search, social media, search engine optimisation (SEO) and Amazon…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 60 | ||||
“Sleeping Giant Media is an award-winning digital marketing agency providing digital marketing services for businesses that wish to grow online.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 57 | ||||
“Get found online.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 57 | ||||
“Exposure Ninja is an award-winning search marketing agency specialising in SEO, AI Search and PPC.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 55 | ||||
“Click Consult, an IQVIA business, is a multi award-winning digital and search marketing agency with a focus on organic (SEO) and paid search (PPC).” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 54 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 52 | ||||
“SUSO Digital is an award-winning SEO and AI Search agency.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Seedhub MediaIndirect evidence | 51 | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 48 | ||||
“Screaming Frog is a search marketing agency drawing on years of experience from within the world of digital marketing.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 47 | ||||
“Sherbet Donkey is an SEO agency built for businesses that want sustainable, long-term growth from organic search.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 47 | ||||
“Since FirstFound has helped thousands of customers to succeed in the digital world.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Atlas SEOIndirect evidence | 46 | |||
“Every business has one thing in common, the drive to succeed.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 44 | ||||
“We're Wolfenden, an independent performance marketing agency helping ambitious brands unlock sustainable growth through organic search, authority, digital PR, paid media, data and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 44 | ||||
“KD Web is an award winning internet marketing, web design and creative agency, providing SEO, polished website design, Ecommerce and CMS systems as well as branding and graphic…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 42 | ||||
“Hello, we’re Seed, a progressive performance marketing agency rooted in Brighton and Hove, dedicated to building sustainable growth across SEO, PPC, PR, Creative and Social.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 38 | ||||
“Distinctly is an independent digital marketing agency with a passion for SEO, paid media, digital PR and content.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 38 | ||||
“SaaS marketing strategy and execution team for B2B brands with limited in-house resources.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 34 | ||||
“Ranked in the top 3% agencies, with Google Premier Partner status, we excel in all areas of digital marketing with a focus on supporting teams to bring their marketing in-house.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 33 | ||||
“Bird UK - bird.co.uk Bird UAE - bird.ae Bird USA - bird.marketing Bird Marketing, an award-winning digital marketing agency, is a beacon of excellence in the digital landscape.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 33 | ||||
“Atomic is a Digital Marketing Agency based in Cheshire and Hampshire, specialising in PPC, SEO & Web Design.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 32 | ||||
“Footprint Digital is here to help.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,553 SaaS SEO agencies based in the United Kingdom
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SaaS SEO agencies based in the United Kingdom at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among SaaS SEO agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “SaaS SEO agencies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among SaaS SEO agencies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,087 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
SaaS SEO agencies by metro
Frequently asked
How many SaaS SEO agencies are there based in the United Kingdom?
RevenueBase identified 1,553 SaaS SEO agencies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Brightlocal, headquartered in And Hove, tops this list with the largest team on record.
Which city has the most SaaS SEO agencies?
London leads with 424 headquartered companies, followed by Manchester (67) and Birmingham (59).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,087 verified decision-maker contacts tracked across these 1,553 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
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SaaS SEO agencies by geography
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.