Company lists · Data verified August 2026

Top 25 Customer service call centers based in the United Kingdom

Name: Customer service call centers 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 121 companies tracked

There are 121 customer service call centers headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,249 professional contacts across them, including 507 with verified work emails and 177 with mobile numbers. London is the largest hub.

This list covers customer service call centers 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.

121Companies

4,249Contacts tracked

507Verified emails

177Mobile numbers

Unlock all 121 companies Free account · no credit card · 2 minutes

The 25 largest customer service call centers based in the United Kingdom

Ranked by team size

Top 25 of 121 customer service call centers 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	RESQ	Seaham	1,001-5,000	493	149
3	ANT Marketing	Sheffield	501-1,000	328	35
4	The Contact Company	Wirral	1,001-5,000	324	17
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	Rsvp Media Response LTD	London	201-500	95	22
10	Subfero	Bristol	51-200	84	2
11	FM Outsource	Bury	201-500	82	33
12	Callcare	London	1,001-5,000	59	13
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	Chase Response	Croydon	501-1,000	39	3
17	Opencontact	Norwich	51-200	24	13
18	Phoneta	Barncoose Redruth	51-200	17	8
19	VIP Communications	Hessle	11-50	15	5
20	Globe Call Center	Wilmington	51-200	14	3
21	Prospecting Dynamics	Nottingham	11-50	8	4
22	Forge Solutions LTD	Manchester	51-200	8	1
23	Interactive Marketing UK Limited	Cheam	51-200	6	4
24	Pressplay Call Centre	Barnstaple	51-200	5	2
25	Angel Call Handling	Andover	11-50	5	2

Showing 25 of 121 customer service call centers based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 507 reachable decision-makers.

Free account · no credit card

See all 121 companies

Customer service call centers based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 26 HQs

177Contacts with mobile numbers

0Emails 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+

Customer service call centers by metro

Metro	Companies
Customer service call centers in London	26
Customer service call centers in Bristol	6
Customer service call centers in Manchester	5
Customer service call centers in Norwich	3
Customer service call centers in Sheffield	3
Customer service call centers in Leicester	3
Customer service call centers in Andover	2
Customer service call centers in Newbury	2

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 “customer service call centers”, 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; 0 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 customer service call centers are there based in the United Kingdom?

There are 121 customer service call centers 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 customer service call centers?

London leads with 26 headquartered companies, followed by Bristol (6) and Manchester (5).

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 507 verified decision-maker contacts tracked across these 121 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.

Ready to reach these companies? Verified emails and direct dials for all 121 customer service call centers based in the United Kingdom. Start with a free account, no credit card.

Get the full list

Related lists

Customer service call centers by geography

Browse the directory

Browse: Companies home · All United Kingdom lists · All Customer service call centers lists · New lists

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.