Company lists · Data refreshed September 2026

Top 25 Lead generation databases based in the United Kingdom

Name: Lead generation databases 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 296 companies tracked

RevenueBase identified 296 lead generation databases headquartered in the United Kingdom as of September 2026 and tracks 2,098 professional contacts across them, including 329 with verified work emails and 88 with mobile numbers. London is the largest hub.

This list covers lead generation databases 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

296Companies

2,098Contacts tracked

329Verified emails

88Mobile numbers

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The 25 largest lead generation databases based in the United Kingdom

Ranked by team size

Top 25 of 296 lead generation databases 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 databases: 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	ConvertaIndirect evidence	Harrogate, United KingdomHQ checked Sep 4, 2026	11-50	38
	“It’s simple.” Source: company website · checked Sep 4, 2026
3	Think Pipeline LTDStrong evidence	Woking, United KingdomHQ checked Sep 4, 2026	51-200	38
	“We are an ambitious and agile lead generation business, who exist to genuinely accelerate your growth!” Source: company website · checked Sep 4, 2026
4	LeadlyPartial evidence	Manchester, United KingdomHQ checked Sep 4, 2026	51-200	34
	“Delivering leads at scale to the most trustworthy financial companies nationwide.” Source: company website · checked Sep 4, 2026
5	KULARPartial evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	32
	“AI Lead Generator.” Source: company website · checked Sep 4, 2026
6	Watts Marketing LTDStrong evidence	Norwich, United KingdomHQ checked Sep 4, 2026	51-200	30
	“Watts Marketing is the largest exclusive lead generation company in the UK, located in Norwich.” Source: company website · checked Sep 4, 2026
7	Data HQ LTDIndirect evidence	Chelmsford, United KingdomHQ checked Sep 4, 2026	11-50	27
	“Thank you for visiting us, we’re glad you came.” Source: company website · checked Sep 4, 2026
8	Lead ProntoStrong evidence	Birkenhead, United KingdomHQ checked Sep 4, 2026	11-50	24
	“What We Do Lead Pronto is a digital lead generation company helping businesses acquire high-quality leads and customers through multi-channel marketing.” Source: company website · checked Sep 4, 2026
9	Inbox InsightIndirect evidence	Johannesburg, United KingdomHQ checked Sep 4, 2026	51-200	21
	“Inbox Insight \| Demand More.” Source: company website · checked Sep 4, 2026
10	Lead GEN DepartmentStrong evidence	Weston Longville, United KingdomHQ checked Sep 4, 2026	1-10	19
	“B2B Lead Generation for Tech & SAAS companies, specialising in targeting enterprise accounts.” Source: company website · checked Sep 4, 2026
11	Home Lead GENStrong evidence	Exeter, United KingdomHQ checked Sep 4, 2026	11-50	19
	“At Home Lead Gen, we specialise in delivering tailored lead generation solutions that drive growth and success for your business.” Source: company website · checked Sep 4, 2026
12	Research RunnerStrong evidence	Harlow, United KingdomHQ checked Sep 4, 2026	11-50	16
	“We started out providing lead generation for market research agencies and have since expanded into many other sectors including finance, recruitment, professional services…” Source: company website · checked Sep 4, 2026
13	JBI AdvertisingStrong evidence	London, United KingdomHQ checked Sep 4, 2026	1-10	16
	“Our mission is to empower businesses across various sectors, locally and globally, by delivering innovative performance driven lead generation solutions.” Source: company website · checked Sep 4, 2026
14	salesflow.ioStrong evidence	London, United KingdomHQ checked Sep 4, 2026	11-50	14
	“Salesflow is a simple and effective lead-generation platform that enables Sales Teams, Agencies and growing SMBs to generate quality leads fast.” Source: company website · checked Sep 4, 2026
15	MerrehillStrong evidence	Macclesfield, United KingdomHQ checked Sep 4, 2026	11-50	13
	“Generating leads for businesses is what we do, and what we’ve been doing since 2005.” Source: company website · checked Sep 4, 2026
16	I-4business Emea LTDIndirect evidence	Farnham, United KingdomHQ checked Sep 4, 2026	11-50	13
	“i-4business is a live, on-line resource covering EVERY key decision maker within EVERY enterprise organisation.” Source: company website · checked Sep 4, 2026
17	ONE Claims ManagementStrong evidence	Manchester, United KingdomHQ checked Sep 4, 2026	1-10	13
	“One Claims Management specialises in compliant, fully in‑house lead generation and case acquisition for the legal, finance, insurance, and consumer sectors.” Source: company website · checked Sep 4, 2026
18	Bluewater Marketing LTDStrong evidence	Wellingborough, United KingdomHQ checked Sep 4, 2026	11-50	12
	“Professional B2B Lead Generation services.” Source: company website · checked Sep 4, 2026
19	Callent Tech LTDPartial evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	12
	“Welcome to Callent Tech, The Future of B2B Demand Generation.” Source: company website · checked Sep 4, 2026
20	Veneficus UKStrong evidence	Guildford, United KingdomHQ checked Sep 4, 2026	11-50	11
	“Veneficus is a lead generation company drawing on over 10 years experience of delivering thousands of high quality leads to clients on a daily basis.” Source: company website · checked Sep 4, 2026
21	Choose Leads LTDPartial evidence	Bath, United KingdomHQ checked Sep 4, 2026	1-10	11
	“Choose Leads is a market leader in supplying quality consumer data and leads within the UK.” Source: company website · checked Sep 4, 2026
22	Prism Marketing Group LTDStrong evidence	London, United KingdomHQ checked Sep 4, 2026	51-200	10
	“Prism Marketing Group is a leading Lead Generation agency based in Canary Wharf, London, with offices in Chichester, Manchester.” Source: company website · checked Sep 4, 2026
23	The Datashop CRM LTDStrong evidence	Erdington, United KingdomHQ checked Sep 4, 2026	11-50	10
	“DataShop is the UK’s most successful lead generation company and business data provider.” Source: company website · checked Sep 4, 2026
24	Cardwell MarketingPartial evidence	Tachbrook Park, United KingdomHQ checked Sep 4, 2026	11-50	10
	“Cardwell Marketing provides businesses with database marketing solutions.” Source: company website · checked Sep 4, 2026
25	Greyhive LTDPartial evidence	Leicester, United KingdomHQ checked Sep 4, 2026	1-10	10
	“We use marketing, telesales, and the latest AI to generate qualified leads for your organisation.” Source: company website · checked Sep 4, 2026

Showing 25 of 296 lead generation databases based in the United Kingdom

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Lead generation databases based in the United Kingdom at a glance

As of Sep 4, 2026

1-10Median size (employees)

LondonLargest hub · 99 HQs

88Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

195

11-50

51-200

201-500

Verified emails by last verification

0–30

31–60

61–90

165

90–180

134

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 databases, 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 databases”. 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 databases, 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, 329 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 databases by metro

Lead generation databases in London99

Frequently asked

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

RevenueBase identified 296 lead generation databases 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 databases?

London leads with 99 headquartered companies, followed by Manchester (18) and Birmingham (4).

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 329 verified decision-maker contacts tracked across these 296 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.