Company lists · Data verified August 2026

Top 25 Website visitor identification tools based in the United Kingdom

Name: Website visitor identification tools based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 60 companies tracked

There are 60 website visitor identification tools headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 1,184 professional contacts across them, including 651 with verified work emails and 101 with mobile numbers. London is the largest hub.

This list covers website visitor identification tools headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

60Companies

1,184Contacts tracked

651Verified emails

101Mobile numbers

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The 25 largest website visitor identification tools based in the United Kingdom

Ranked by team size

Top 25 of 60 website visitor identification tools based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Lead Forensics	Bournemouth	201-500	855	553
2	Fanplayr	London	11-50	53	35
	RevenueBasePublisher of this directory	Boston, MA	n/a	n/a	Try free
3	Countly	London	51-200	40	1
4	Architect	n/a	n/a	34	4
5	Ivantage	London	1-10	15	1
6	Sweet Analytics	London	11-50	14	11
7	CX Data The Ecom Signal Engine	London	1-10	11	4
8	Canddi	n/a	11-50	11	2
9	leadpipe.com	London	11-50	10	2
10	whoisvisiting.com	Northampton	11-50	8	4
11	Backona	Coventry	1-10	8	2
12	NET Visibility	Kenilworth	1-10	6	4
13	Ringside Data	London	1-10	5	5
14	pemberton.digital	London	1-10	5	2
15	Gosquared	n/a	1-10	4	3
16	Signalsight	London	11-50	4	1
17	Ipfingerprint Who's Looking At Your Website	Witney	11-50	4	1
18	Aillum LTD	Paisley	1-10	3	3
19	WEB Insights	London	11-50	3	1
20	Braingraph	London	1-10	3	1
21	A1webstats	Canterbury	1-10	3	1
22	Flowpoint	London	1-10	2	1
23	ZYLA	Shrewsbury	1-10	2	1
24	Observer	Bristol	1-10	2	1
25	Pattern Theory	Manchester	1-10	2	1

Showing 25 of 60 website visitor identification tools based in the United Kingdom

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Website visitor identification tools based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 24 HQs

101Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Website visitor identification tools by metro

Metro	Companies
Website visitor identification tools in London	24
Website visitor identification tools in Brighton	3
Website visitor identification tools in Bournemouth	2
Website visitor identification tools in Bristol	2
Website visitor identification tools in Manchester	1
Website visitor identification tools in Newcastle Upon Tyne	1
Website visitor identification tools in Paisley	1

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “website visitor identification tools”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 5 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many website visitor identification tools are there based in the United Kingdom?

There are 60 website visitor identification tools headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Lead Forensics, headquartered in Bournemouth, tops this list with the largest team on record.

Which city has the most website visitor identification tools?

London leads with 24 headquartered companies, followed by Brighton (3) and Bournemouth (2).

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 651 verified decision-maker contacts tracked across these 60 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

Website visitor identification tools by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.