Company lists · Data refreshed September 2026

Top 25 Search marketing software companies based in London, United Kingdom

Name: Search marketing software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 174 companies tracked

RevenueBase identified 174 search marketing software companies headquartered in London, United Kingdom as of September 2026 and tracks 1,103 professional contacts across them, including 165 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers search marketing software companies headquartered in London, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

174Companies

1,103Contacts tracked

165Verified emails

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The 25 largest search marketing software companies based in London, United Kingdom

Ranked by team size

Top 25 of 174 search marketing software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to search marketing software companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Adthena	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	123 contacts →
	Partial evidence “Adthena is the market-leading, AI-driven search intelligence platform that helps enterprise brands and agencies lower paid search costs, protect brand equity and stay ahead of…” Source: RevenueBase Database · checked Sep 29, 2026
2	Digitex Technologies	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	46 contacts →
	Partial evidence “Bringing our 10+ years of experience and knowledge of digital marketing, Digitex Technologies has now become almost synonymous with SEO, social media marketing, website building…” Source: RevenueBase Database · checked Sep 29, 2026
3	Bird Marketing	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	33 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026
4	Iconic Digital Marketing Consultants LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	30 contacts →
	Partial evidence “Iconic Digital is a leading digital marketing agency based in London, UK.” Source: RevenueBase Database · checked Sep 29, 2026
5	KAU Media Group	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	27 contacts →
	Partial evidence “KAU Media Group is a full service media agency that deliver compelling digital marketing solutions.” Source: RevenueBase Database · checked Sep 29, 2026
6	Digital Search Group Limited	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	17 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
7	ESA Digital LTD	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	13 contacts →
	Indirect evidence “Award-Winning SEO Agency for $1M+ Tech Companies (SaaS, Web) and 6-figure E-Commerce Brands.” Source: RevenueBase Database · checked Sep 29, 2026
8	Atom42	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	8 contacts →
	Partial evidence “atom42 is full service, award-winning online marketing agency, based in Camden, London.” Source: RevenueBase Database · checked Sep 29, 2026
9	HYPUS	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	7 contacts →
	Strong evidence “At Hypus, we’ve built a team capable of achieving all your paid search and digital marketing goals.” Source: RevenueBase Database · checked Sep 29, 2026
10	squared.io	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	6 contacts →
	Partial evidence “Squared.io is an award-winning Google Ads insight and automation platform, which helps advertisers manage paid search at scale.” Source: RevenueBase Database · checked Sep 29, 2026
11	Wordtracker	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	4 contacts →
	Partial evidence “Wordtracker offers a powerful Keyword tool that gives you the data to improve your search rankings, attract high levels of targeted visitors to your site, and raise conversion…” Source: RevenueBase Database · checked Sep 29, 2026
12	Zazen Media LTD	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Zazen is a specialised search marketing agency focused on lead generation through Pay Per Click (PPC), Social Media, and SEO.” Source: RevenueBase Database · checked Sep 29, 2026
13	GLS Media	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	3 contacts →
	Partial evidence “Established in 2018, GLS Media is a UK based Digital Marketing Agency, offering SEM and SEO services to both global and local organisations.” Source: RevenueBase Database · checked Sep 29, 2026
14	Robot-Txt Limited	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	3 contacts →
	Strong evidence “We are a small but agile search marketing consultancy with over 20 years’ experience in the industry working with a wide range of clients across the globe, from large corporate…” Source: RevenueBase Database · checked Sep 29, 2026
15	Black Diamond Marketing LTD	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Welcome to Black Diamond Marketing - your gateway to dominating Google.” Source: RevenueBase Database · checked Sep 29, 2026
16	Both Birds	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “At Both Birds we’re passionate optimisers, which means we'll always try to provide digital marketing solutions that solve more than one problem at a time.” Source: RevenueBase Database · checked Sep 29, 2026
17	Traffic Optimiser	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	51-200	2 contacts →
	Indirect evidence “Traffic Optimiser, founded in 2009, is a London-based SEO and PPC agency with offices in Poznan, Budapest, Melbourne and Santiago.” Source: RevenueBase Database · checked Sep 29, 2026
18	Bamsh Digital Marketing	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	2 contacts →
	Partial evidence “Bamsh Digital Marketing offers the full suite of digital marketing services that you would expect from one of the best internet marketing and online lead generation companies in…” Source: RevenueBase Database · checked Sep 29, 2026
19	SEM Booster	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Strong evidence “SEM Booster is a global digital marketing agency with expertise in paid search, analytics, social media and conversion optimization.” Source: RevenueBase Database · checked Sep 29, 2026
20	Nomad Optimise	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	2 contacts →
	Strong evidence “Nomad Optimise offers premier SEO and Search Marketing solutions for Financial Services and Fintech Companies.” Source: RevenueBase Database · checked Sep 29, 2026
21	Lion Impact	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	1 contacts →
	Indirect evidence “As a full-service digital agency, we provide a strategic approach to driving qualified traffic.” Source: RevenueBase Database · checked Sep 29, 2026
22	Click2digital	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	11-50	1 contacts →
	Strong evidence “Click2Digital is a cutting edge digital marketing agency providing clients with premium Search Engine Marketing (SEM) solutions.” Source: RevenueBase Database · checked Sep 29, 2026
23	Paramarq Limited	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	1 contacts →
	Indirect evidence “Most clients have experienced 4-10x fold gains in sales enquiries on a like-for-like basis.” Source: RevenueBase Database · checked Sep 29, 2026
24	Ample Marketing	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
25	Diamond Goose	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	1-10	1 contacts →
	Partial evidence “We help brands achieve predictable, sustainable and profitable sales via search-based and intent-based advertising utilising Google's ad network, Meta, Insta, Tik Tok & Email…” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: search marketing software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names search marketing software companies.
Partial evidence: Its own public description names part of search marketing software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name search marketing software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 174 search marketing software companies based in London, United Kingdom

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Search marketing software companies based in London, United Kingdom at a glance

As of Sep 29, 2026

15.0%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

106

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 174 companies.

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 search marketing software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, United Kingdom whose own description of what they do matches “search marketing software companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names search marketing software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among search marketing software companies, and records with no verified work email. Companies headquartered outside London 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 its RevenueBase Smart Search 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, 165 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 29, 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.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names search marketing software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many search marketing software companies are there based in London, United Kingdom?

RevenueBase identified 174 search marketing software companies headquartered in London, 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?

Adthena, headquartered in London, tops this list with the largest team on record.

Which city in the United Kingdom has the most search marketing software companies?

London leads the United Kingdom with 174 headquartered companies, followed by Manchester (25) and Birmingham (17).

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 165 verified decision-maker contacts tracked across these 174 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 29, 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 Smart Search, 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.