Company lists · Data verified August 2026

Top 25 Call center technology vendors based in the United Kingdom

Name: Call center technology vendors 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 141 companies tracked

There are 141 call center technology vendors headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,226 professional contacts across them, including 1,028 with verified work emails and 417 with mobile numbers. London is the largest hub.

This list covers call center technology vendors 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.

141Companies

4,226Contacts tracked

1,028Verified emails

417Mobile numbers

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The 25 largest call center technology vendors based in the United Kingdom

Ranked by team size

Top 25 of 141 call center technology vendors 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	MTI	London	501-1,000	849	94
2	RESQ	Seaham	1,001-5,000	493	149
3	Imimobile Part Of Webex	London	1,001-5,000	436	54
4	EG Solutions	Dunston	51-200	226	8
5	Clearanswer Call Centres	Leeds	501-1,000	202	24
6	3clogic	London	51-200	189	120
7	Route 101 LTD	Bristol	51-200	135	93
8	QPC	Birmingham	51-200	116	26
9	FM Outsource	Bury	201-500	82	33
10	Business Systems	London	51-200	71	43
11	AKIXI	Crawley	51-200	67	53
12	Bulb Tech	Hoddesdon	51-200	57	50
13	Teleware PLC	Easingwold	51-200	49	25
14	Sovran AI	London	11-50	46	9
15	Sytel LTD	Aylesbury Bucks	11-50	41	12
16	Chase Response	Croydon	501-1,000	39	3
17	SVL	East Kilbride	11-50	35	18
18	Virsae	London	51-200	32	19
19	Mission Labs	Manchester	51-200	29	12
20	CTALK	Staffordshire Technology Park	51-200	28	12
21	Resolvable	London	11-50	28	6
22	Anana LTD	n/a	51-200	27	4
23	Noetica	London	11-50	25	20
24	Datatrack	Christchurch	11-50	24	5
25	Mojo CX	Manchester	11-50	22	7

Showing 25 of 141 call center technology vendors based in the United Kingdom

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Call center technology vendors based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 35 HQs

417Contacts with mobile numbers

3Emails 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

Call center technology vendors by metro

Metro	Companies
Call center technology vendors in London	35
Call center technology vendors in Manchester	9
Call center technology vendors in Glasgow	4
Call center technology vendors in Leeds	4
Call center technology vendors in Birmingham	3
Call center technology vendors in Bristol	3
Call center technology vendors in Reading	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 technology vendors”, 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; 3 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 technology vendors are there based in the United Kingdom?

There are 141 call center technology vendors headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

MTI, headquartered in London, tops this list with the largest team on record.

Which city has the most call center technology vendors?

London leads with 35 headquartered companies, followed by Manchester (9) and Glasgow (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 1,028 verified decision-maker contacts tracked across these 141 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.