Company lists · Data refreshed September 2026

Top 25 Marketplace SEO agencies based in London, United Kingdom

Name: Marketplace SEO agencies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 576 companies tracked

RevenueBase identified 576 marketplace SEO agencies headquartered in London, United Kingdom as of September 2026 and tracks 2,640 professional contacts across them, including 448 with verified work emails. London is the largest hub.

This list covers marketplace SEO agencies 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

576Companies

2,640Contacts tracked

448Verified emails

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The 25 largest marketplace SEO agencies based in London, United Kingdom

Ranked by team size

Top 25 of 576 marketplace SEO agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names marketplace SEO agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	FinixioPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	96
	“Finixio is UK based remote first Marketing & SEO Agency helping clients all over the world.” Source: company website · checked Sep 5, 2026
2	MediavisionIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	77
	“At MediaVision, we believe there's potential hidden in every search.” Source: company website · checked Sep 5, 2026
3	RebootIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	57
	“Get found online.” Source: company website · checked Sep 5, 2026
4	Suso DigitalPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	52
	“SUSO Digital is an award-winning SEO and AI Search agency.” Source: company website · checked Sep 5, 2026
5	OptimizonIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	47
	“Data-led e-commerce across the digital shelf!” Source: company website · checked Sep 5, 2026
6	KD WEBPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	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 5, 2026
7	DistinctlyPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	38
	“Distinctly is an independent digital marketing agency with a passion for SEO, paid media, digital PR and content.” Source: company website · checked Sep 5, 2026
8	Bird MarketingIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	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 5, 2026
9	NOVOSIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	31
	“Be the answer™.” Source: company website · checked Sep 5, 2026
10	Iconic Digital Marketing Consultants LTDIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	30
	“Iconic Digital is a leading digital marketing agency based in London, UK.” Source: company website · checked Sep 5, 2026
11	KAU Media GroupIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	27
	“KAU Media Group is a full service media agency that deliver compelling digital marketing solutions.” Source: company website · checked Sep 5, 2026
12	Local FameIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	25
	“Local Fame is an internet marketing agency in London established in 2012 by Rune Sovndahl.” Source: company website · checked Sep 5, 2026
13	EmbarquePartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	25
	“We help companies grow with revenue-driven SEO.” Source: company website · checked Sep 5, 2026
14	GO UPIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	22
	“Go Up is a leading international search marketing and digital design agency based in London, UK and Los Angeles, USA.” Source: company website · checked Sep 5, 2026
15	Pearl LemonPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	22
	“We are a globally remote team connected by cloud technology and a passion for all things SEO.” Source: company website · checked Sep 5, 2026
16	RE SignalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	21
	“Re:signal is the digital growth consultancy for eCommerce brands that want clarity, commercial focus, and dependable results.” Source: company website · checked Sep 5, 2026
17	StudiospacePartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	18
	“StudioSpace is an agency marketplace that provides on-demand digital & marketing services to the world's leading brands.” Source: company website · checked Sep 5, 2026
18	SeoskitPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	18
	“SEOSkit is a result-driven SEO agency with 9+ years of hands-on experience helping businesses grow through organic search.” Source: company website · checked Sep 5, 2026
19	Digital Search Group LimitedIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	17
	“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: company website · checked Sep 5, 2026
20	BuiltvisibleIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	16
	“With more ways than ever for consumers to find your brand, we make you visible wherever they’re searching, going beyond best practice to build holistic search strategies for…” Source: company website · checked Sep 5, 2026
21	Bough DigitalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	15
	“Bough Digital is a professional full-service digital marketing company based in the UK, which aims to deliver a first-class, full scale service to a variety of clients.” Source: company website · checked Sep 5, 2026
22	VM InteractiveIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	14
	“VM Interactive is a digital marketing agency with real passion for driving traffic.” Source: company website · checked Sep 5, 2026
23	ESA Digital LTDPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	13
	“Award-Winning SEO Agency for $1M+ Tech Companies (SaaS, Web) and 6-figure E-Commerce Brands.” Source: company website · checked Sep 5, 2026
24	Ignite SEO LondonIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	12
	“It’s time to make your business grow.” Source: company website · checked Sep 5, 2026
25	Silvertip DigitalIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	11
	“We are Silvertip Digital.” Source: company website · checked Sep 5, 2026

Showing 25 of 576 marketplace SEO agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 448 reachable decision-makers.

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See all 576 companies

Marketplace SEO agencies based in London, United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 576 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

375

11-50

170

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United Kingdom list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for London, over 576 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 marketplace 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 London, United Kingdom whose own description of what they do matches “marketplace 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 marketplace SEO agencies, 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 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, 448 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 5, 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.

Marketplace SEO agencies by metro in the United Kingdom

Marketplace SEO agencies in London576
Marketplace SEO agencies in Manchester100
Marketplace SEO agencies in Birmingham70
Marketplace SEO agencies in Leeds36
Marketplace SEO agencies in Glasgow34
Marketplace SEO agencies in Nottingham32
Marketplace SEO agencies in Liverpool28
Marketplace SEO agencies in Bristol27
Marketplace SEO agencies in Brighton25

Frequently asked

How many marketplace SEO agencies are there based in London, United Kingdom?

RevenueBase identified 576 marketplace SEO agencies 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?

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

Which city has the most marketplace SEO agencies?

London leads with 576 headquartered companies, followed by Manchester (100) and Birmingham (70).

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 448 verified decision-maker contacts tracked across these 576 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 5, 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.