Company lists · Data refreshed September 2026

Top 25 Lead generation companies based in the United Kingdom

Name: Lead generation companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 1,492 companies tracked

RevenueBase identified 1,492 lead generation companies headquartered in the United Kingdom as of September 2026 and tracks 13,231 professional contacts across them, including 2,444 with verified work emails and 807 with mobile numbers. London is the largest hub.

This list covers lead generation companies 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 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

1,492Companies

13,231Contacts tracked

2,444Verified emails

807Mobile numbers

Unlock all 1,492 companies Free signup · no credit card · 500 free credits

The 25 largest lead generation companies based in the United Kingdom

Ranked by team size

Top 25 of 1,492 lead generation companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names lead generation companies: 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	QualifaStrong evidence	Brighton, United KingdomHQ checked Sep 4, 2026	51-200	440
	“We are an award winning multilingual lead generation and market research service provider for B2B publishing, marketing, events and tech companies.” Source: company website · checked Sep 4, 2026
2	MVFIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	201-500	417
	“MVF powers growth for our clients by connecting them to potential customers.” Source: company website · checked Sep 4, 2026
3	EntourageIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	363
	“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Source: company website · checked Sep 4, 2026
4	Astute.comIndirect evidence	Bournemouth, United KingdomHQ checked Sep 4, 2026	201-500	265
	“Welcome to Astute.” Source: company website · checked Sep 4, 2026
5	Quantum MarketingIndirect evidence	Reading, United KingdomHQ checked Sep 4, 2026	51-200	198
	“Quantum Marketing hangs its hat on one simple promise: one agency, one brief, and one measure of success.” Source: company website · checked Sep 4, 2026
6	Account MediaPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	186
	“We work exclusively with B2B publishers and lead gen providers.” Source: company website · checked Sep 4, 2026
7	InterlinkIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	181
	“We help our clients supercharge their sales.” Source: company website · checked Sep 4, 2026
8	AIR MarketingStrong evidence	Exeter, United KingdomHQ checked Sep 4, 2026	51-200	123
	“Since 2016, Air Marketing has been the trusted outsourced sales and lead generation agency in the UK for ambitious B2B businesses.” Source: company website · checked Sep 4, 2026
9	PUNCHIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	122
	“Most B2B pipeline problems aren't a volume problem.” Source: company website · checked Sep 4, 2026
10	GCLPartial evidence	Birmingham, United KingdomHQ checked Sep 4, 2026	51-200	120
	“GCL, with its unique, non-scripted approach to telemarketing and related marketing services, has for over 30 years established an enviable reputation for providing winning lead…” Source: company website · checked Sep 4, 2026
11	DurhamlaneIndirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 4, 2026	51-200	114
	“More than SDR Outsourcing.” Source: company website · checked Sep 4, 2026
12	FLOWDIndirect evidence	Manchester, United KingdomHQ checked Sep 4, 2026	11-50	106
	“Flowd is an award-winning sales prospecting specialist based in the UK, Europe & US.” Source: company website · checked Sep 4, 2026
13	Pursuit MarketingPartial evidence	Glasgow, United KingdomHQ checked Sep 4, 2026	51-200	96
	“Pursuit Marketing are Experts in Demand Generation, Telemarketing, Digital Marketing and Creative Design - your 360 Marketing Provider.” Source: company website · checked Sep 4, 2026
14	BLUMEIndirect evidence	Manchester, United KingdomHQ checked Sep 4, 2026	51-200	87
	“Blume is here to help our customers grow.” Source: company website · checked Sep 4, 2026
15	Voice Marketing LTDIndirect evidence	Sheffield, United KingdomHQ checked Sep 4, 2026	201-500	75
	“Voice is an agency that specialises in customer acquisition, development and retention programs.” Source: company website · checked Sep 4, 2026
16	Creative MediaStrong evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	70
	“Creative Media is a global marketing agency specializing in B2B lead generation.” Source: company website · checked Sep 4, 2026
17	Angsana NEW Business AgencyStrong evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	60
	“Angsana is the UK’s most respected new business development and lead generation agency for Healthcare & Life Sciences, Marketing Services and Technology companies.” Source: company website · checked Sep 4, 2026
18	Marathon B2BIndirect evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	52
	“We find ourselves in an era of remarkable technological advancement.” Source: company website · checked Sep 4, 2026
19	Lead TechPartial evidence	Pool-In-Wharfedale, United KingdomHQ checked Sep 4, 2026	11-50	51
	“Lead Tech is an award-winning independent financial services lead generator, providing financial service partners with client opportunities for over 15 years.” Source: company website · checked Sep 4, 2026
20	4marketingPartial evidence	Portsmouth, United KingdomHQ checked Sep 4, 2026	11-50	47
	“4Marketing is a direct marketing agency devoted to generating new business opportunities for its clients through its focused new generation of telemarketing professionals.” Source: company website · checked Sep 4, 2026
21	Advance ConnectsStrong evidence	Ellesmere Port, United KingdomHQ checked Sep 4, 2026	51-200	45
	“Advance Connects are a B2B telemarketing, lead generation & appointment scheduling experts, operating within various sectors including construction, built environment, industrial…” Source: company website · checked Sep 4, 2026
22	Broadley SpeakingIndirect evidence	Tavistock, United KingdomHQ checked Sep 4, 2026	11-50	45
	“With over three decades of experience, we partner with B2B sales and marketing teams to drive and nurture new customer acquisition - securing conversations with the right…” Source: company website · checked Sep 4, 2026
23	Beanstalk MarketingStrong evidence	Southend On Sea, United KingdomHQ checked Sep 4, 2026	11-50	43
	“Beanstalk is an integrated B2B Telemarketing and Lead Generation agency dedicated to helping our customers win new business.” Source: company website · checked Sep 4, 2026
24	First4lawyers LTDStrong evidence	Huddersfield, United KingdomHQ checked Sep 4, 2026	51-200	43
	“Launched in 2008, First4Lawyers has grown to become the UK’s largest multi-award winning, independent legal marketing collective, specialising in lead generation for personal…” Source: company website · checked Sep 4, 2026
25	Parallel Partnerships LTDIndirect evidence	Leeds, United KingdomHQ checked Sep 4, 2026	51-200	43
	“B2B and B2C outsourced Telemarketing agency.” Source: company website · checked Sep 4, 2026

Showing 25 of 1,492 lead generation companies based in the United Kingdom

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Lead generation companies based in the United Kingdom at a glance

As of Sep 4, 2026

1-10Median size (employees)

LondonLargest hub · 498 HQs

807Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

1,042

11-50

343

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

31–60

214

61–90

1,273

90–180

942

180+

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 lead generation companies, 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 “lead generation companies”. 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 lead generation companies, 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, 2,444 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 4, 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.

Lead generation companies by metro

Frequently asked

How many lead generation companies are there based in the United Kingdom?

RevenueBase identified 1,492 lead generation companies 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?

Qualifa, headquartered in Brighton, tops this list with the largest team on record.

Which city has the most lead generation companies?

London leads with 498 headquartered companies, followed by Manchester (84) and Birmingham (29).

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 2,444 verified decision-maker contacts tracked across these 1,492 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 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.