Company lists · Data verified August 2026

Top 25 Call center companies based in the United Kingdom

Name: Call center companies 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 152 companies tracked

There are 152 call center companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,192 professional contacts across them, including 442 with verified work emails and 195 with mobile numbers. London is the largest hub.

This list covers call center 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. Data current as of August 28, 2026.

152Companies

4,192Contacts tracked

442Verified emails

195Mobile numbers

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The 25 largest call center companies based in the United Kingdom

Ranked by team size

Top 25 of 152 call center companies 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	Convergys Intelligent Contact	Manchester	10001+	876	37
2	ANT Marketing	Sheffield	501-1,000	328	35
3	The Contact Company	Wirral	1,001-5,000	324	17
4	The Telemarketing Company	Brighton	201-500	242	39
5	Response	n/a	1,001-5,000	241	67
6	Clearanswer Call Centres	Leeds	501-1,000	202	24
7	Echo-U LTD	Newcastle Upon Tyne	201-500	140	7
8	We ARE Woven	Bristol	1,001-5,000	131	11
9	Subfero	Bristol	51-200	84	2
10	FM Outsource	Bury	201-500	82	33
11	Callcare	London	1,001-5,000	59	13
12	Contact WEB LTD	Banbury	51-200	57	38
13	Impact Call Centre	Romsey	201-500	55	14
14	Orca Call Answering & Live Chat	Wrexham	51-200	54	12
15	Direct Response	London	51-200	46	6
16	Parallel Partnerships LTD	Leeds	51-200	43	7
17	Orion Call Centre	n/a	51-200	41	3
18	Chase Response	Croydon	501-1,000	39	3
19	1 Stop Data LTD	Northern	51-200	35	3
20	TELU	Leeds	51-200	32	6
21	Opencontact	Norwich	51-200	24	13
22	Phoneta	Barncoose Redruth	51-200	17	8
23	Forge Solutions LTD	Manchester	51-200	8	1
24	Interactive Marketing UK Limited	Cheam	51-200	6	4
25	Pressplay Call Centre	Barnstaple	51-200	5	2

Showing 25 of 152 call center companies based in the United Kingdom

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Call center companies based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 31 HQs

195Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Call center companies by metro

Metro	Companies
Call center companies in London	31
Call center companies in Manchester	8
Call center companies in Bristol	4
Call center companies in Leicester	4
Call center companies in Leeds	4
Call center companies in Norwich	3
Call center companies in Nottingham	3

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 “call center companies”, 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; 1 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 call center companies are there based in the United Kingdom?

There are 152 call center companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Convergys Intelligent Contact, headquartered in Manchester, tops this list with the largest team on record.

Which city has the most call center companies?

London leads with 31 headquartered companies, followed by Manchester (8) and Bristol (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 442 verified decision-maker contacts tracked across these 152 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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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.