Company lists · Data refreshed September 2026

Top 25 International SEO companies based in the United Kingdom

RevenueBase identified 509 company matches for international SEO companies associated with the United Kingdom as of September 2026 and tracks 2,348 professional contacts across them, including 405 with verified work emails and 128 with mobile numbers. London is the largest hub.

This list covers company matches for international SEO companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 4, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 4, 2026 How this list was built
509Companies
2,348Contacts tracked
405Verified emails
128Mobile numbers
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The 25 largest international SEO companies based in the United Kingdom

Ranked by team size
Top 25 of 509 company matches for international SEO companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 4, 202611-5078 contacts →

Exact match

“At MediaVision, we believe there's potential hidden in every search.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
2Exact matchUnited KingdomHQ recorded Sep 4, 202611-5066 contacts →

Exact match

“A lot of digital marketing falls flat when you take it abroad.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3Exact matchHooton, United KingdomHQ recorded Sep 4, 202651-20055 contacts →

Exact match

“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).”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4Exact matchHenley-On-Thames, United KingdomHQ recorded Sep 4, 202611-5048 contacts →

Exact match

“Screaming Frog is a search marketing agency drawing on years of experience from within the world of digital marketing.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5Exact matchBromsgrove, United KingdomHQ recorded Sep 4, 202611-5046 contacts →

Exact match

“Sherbet Donkey is an SEO agency built for businesses that want sustainable, long-term growth from organic search.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6Exact matchNorwich, United KingdomHQ recorded Sep 4, 202611-5044 contacts →

Exact match

“Every business has one thing in common, the drive to succeed.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7Exact matchBradford On Avon, United KingdomHQ recorded Sep 4, 202611-5024 contacts →

Exact match

“Varn is a specialist search marketing consultancy, applying our expertise in SEO, GEO, data, content strategy and digital PR, to accelerate profitable organic growth for our happy…”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8Exact matchYork, United KingdomHQ recorded Sep 4, 202651-20024 contacts →

Exact match

“Digital marketing for global brands.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 4, 202611-5022 contacts →

Exact match

“Go Up is a leading international search marketing and digital design agency based in London, UK and Los Angeles, USA.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 4, 202651-20022 contacts →

Exact match

“We are a globally remote team connected by cloud technology and a passion for all things SEO.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11Exact matchBrentwood, United KingdomHQ recorded Sep 4, 202611-5021 contacts →

Exact match

“Ink Digital, formerly known as Mr SEO, is a performance marketing agency where quality meets transparency.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
12Exact matchManchester, United KingdomHQ recorded Sep 4, 202611-5021 contacts →

Exact match

“We empower progressive, ambitious companies who wish to hire the best SEO talent worldwide to optimise efficiency, profitability and performance.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
13Exact matchKettering, United KingdomHQ recorded Sep 4, 202611-5021 contacts →

Exact match

“Are you tired of watching your competitors run rings around you?”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
14Exact matchAldershot, United KingdomHQ recorded Sep 4, 202611-5018 contacts →

Exact match

“At we have been optimising websites since 2005 and achieved of top Google positions!”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 4, 202611-5018 contacts →

Exact match

“SEOSkit is a result-driven SEO agency with 9+ years of hands-on experience helping businesses grow through organic search.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 4, 202611-5018 contacts →

Exact match

“Digital Search Group Limited is a performance driven online marketing agency built on highly knowledgeable foundations, which have grown over 16 years of providing online…”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
17Exact matchChelmsford, United KingdomHQ recorded Sep 4, 202611-5017 contacts →

Exact match

“Most businesses get SEO wrong.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
18Exact matchIpswich, United KingdomHQ recorded Sep 4, 20261-1017 contacts →

Exact match

“iMarketing specialise in search engine optimisation and SEO training for companies throughout the UK.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
19Exact matchBromsgrove, United KingdomHQ recorded Sep 4, 202611-5015 contacts →

Exact match

“Essential Marketer focuses on RESULTS for companies whether business to business or consumer.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
20Exact matchBrighton And Hove, United KingdomHQ recorded Sep 4, 202611-5015 contacts →

Exact match

“SEOMG!”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
21Exact matchCheltenham, United KingdomHQ recorded Sep 4, 202611-5013 contacts →

Exact match

“We help our clients understand that their websites can work just as hard as their sales teams.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
22Exact matchBirmingham, United KingdomHQ recorded Sep 4, 20261-1012 contacts →

Exact match

“WE WORK WITH AMBITIOUS BRANDS TO DOMINATE GOOGLE.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
23Exact matchNewport, United KingdomHQ recorded Sep 4, 202611-5011 contacts →

Exact match

“As experienced Digital Media professionals we have a wide range of valuable experience which we can apply to make your website work for you.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 4, 20261-1010 contacts →

Exact match

“Your audience is no longer just Googling.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
25Exact matchMereworth, United KingdomHQ recorded Sep 4, 20261-1010 contacts →

Exact match

“We are a website design and search engine promotion company in Kent.”

Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase

Showing 25 of 509 international SEO companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 405 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International SEO companies based in the United Kingdom at a glance

As of Sep 4, 2026
17.2%Verified-email coverage
5.5%Mobile-number coverage
4.6Average contacts per company
1-10Median size (employees)
26.7%Largest-city concentration · London
Sep 4, 2026Page data refreshed

Companies by employee count

1-10
369
11-50
112
51-200
16
201-500
1
501-1,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “international SEO companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 405 professional contacts with verified work emails across the full matched dataset. 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 4, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

International SEO companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “international SEO companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international SEO companies are there based in the United Kingdom?

RevenueBase identified 509 company matches for international SEO companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Mediavision tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most international SEO companies?

London leads with 136 company records, followed by Manchester (19) and Birmingham (14).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 405 professional contacts with verified work emails tracked across these 509 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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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.