Company lists · Data refreshed September 2026

Top 25 Call center facilities based in the United Kingdom

RevenueBase identified 111 company matches for call center facilities associated with the United Kingdom as of September 2026 and tracks 2,146 professional contacts across them, including 256 with verified work emails. London is the largest hub.

This list covers company matches for call center facilities associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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 RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
111Companies
2,146Contacts tracked
256Verified emails
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The 25 largest call center facilities based in the United Kingdom

Ranked by team size
Top 25 of 111 company matches for call center facilities based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBirkenhead, United KingdomHQ recorded Sep 27, 20261,001-5,000312 contacts →

Exact match

“Here at The Contact Company, we add value for clients, working as trusted partners to manage and develop their customer contact processes.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchHull, United KingdomHQ recorded Sep 27, 2026501-1,000205 contacts →

Exact match

“Established since 1998 Clearanswer is an expert provider of contact centre solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchNewcastle Upon Tyne, United KingdomHQ recorded Sep 27, 2026201-500140 contacts →

Exact match

“Echoing our clients in every conversation.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchBristol, United KingdomHQ recorded Sep 27, 20261,001-5,000132 contacts →

Exact match

“Dedicated and shared contact centre outsourcing operations.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 27, 202651-20090 contacts →

Exact match

“A world class offshore outsourcing agency, with offices in London and Harare, we have access to some of the best educated, best spoken graduates you will find anywhere in the…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchBury, United KingdomHQ recorded Sep 27, 2026201-50083 contacts →

Exact match

“We are FM Outsource, a modern customer service outsourcer.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchBristol, United KingdomHQ recorded Sep 27, 202651-20083 contacts →

Exact match

“We are Subfero.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchNantgawr, United KingdomHQ recorded Sep 27, 2026201-50073 contacts →

Exact match

“We’re a 24/7 specialist outsourced Contact Centre business.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 27, 20261,001-5,00059 contacts →

Exact match

“CallCare is your outsourced contact centre and customer service partner.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchBanbury, United KingdomHQ recorded Sep 27, 202651-20057 contacts →

Exact match

“At Contact Web, we deliver customer experience outsourcing differently.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchRomsey, United KingdomHQ recorded Sep 27, 2026201-50054 contacts →

Exact match

“We are an established AI-enabled call centre specialising in every aspect of sales and customer service.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchWrexham, United KingdomHQ recorded Sep 27, 202651-20054 contacts →

Exact match

“Orca offers flexible and adaptable call answering and live chat services that help clients manage costs effectively.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchShadsworth Business Park, United KingdomHQ recorded Sep 27, 202651-20041 contacts →

Exact match

“From planning & recruiting to training & delivery, we provide unbeatable outsourcing services that are not only cost effective but surpass the average UK skill set.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 27, 202611-5040 contacts →

Exact match

“Kingdom Vision is a medium to take your business from good to great.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchCroydon, United KingdomHQ recorded Sep 27, 2026501-1,00039 contacts →

Exact match

“For over 20 years, Chase Response has delivered unrivalled standards in call centre outsourcing and customer management services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchNorwich, United KingdomHQ recorded Sep 27, 202651-20021 contacts →

Exact match

“OpenContact is your trusted UK-based partner for multi-channel customer contact.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 27, 202651-20010 contacts →

Exact match

“Indigo 21: Pioneering IT business process outsourcing since 2003.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 27, 202651-2008 contacts →

Exact match

“Confero is a UK based outsourced call centre business, focussed on delivering high quality inbound, outbound, and digital services to our clients.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchBury, United KingdomHQ recorded Sep 27, 202651-2008 contacts →

Exact match

“At Forge Solutions, we redefine call centre services with state-of-the-art technology and tailored solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 27, 20261-107 contacts →

Exact match

“At alaouico, we understand the challenges businesses face with customer interactions-whether it's managing high call volumes, ensuring timely responses, or maintaining customer…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchCheam, United KingdomHQ recorded Sep 27, 202651-2006 contacts →

Exact match

“Interactive Marketing has over 20 years’ experience in providing an inbound and outbound call service specialising in customer relationship and database management.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchManchester, United KingdomHQ recorded Sep 27, 20261-106 contacts →

Exact match

“USMAART’s provides business consultancy and outsourcing support to a wide range of clients across multiple sectors.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchBristol, United KingdomHQ recorded Sep 27, 202611-505 contacts →

Exact match

“With over 40 years of experience in the management team of providing in-house and outsourced telephone services, Connect Worldwide Services has unrivalled expertise in…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchAndover, United KingdomHQ recorded Sep 27, 202611-504 contacts →

Exact match

“Angel Call Handling are award winning UK based experts in providing inbound & outbound call handling, Virtual Assistants, PA and admin support to businesses.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchNottingham, United KingdomHQ recorded Sep 27, 202651-2003 contacts →

Exact match

“Integrated Communication Services (ICS) are a 24/7/365 call centre operation based in central England.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 111 call center facilities based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 256 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Call center facilities based in the United Kingdom at a glance

As of Sep 27, 2026
11.9%Verified-email coverage
19.3Average contacts per company
11-50Median size (employees)
18.9%Largest-city concentration · London
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
33
51-200
31
201-500
12
501-1,000
5
1,001-5,000
4

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 111 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United Kingdom whose business descriptions match “call center facilities” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 256 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “call center facilities”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many call center facilities are there based in the United Kingdom?

RevenueBase identified 111 company matches for call center facilities associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

The Contact Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most call center facilities?

London leads with 21 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 256 professional contacts with verified work emails tracked across these 111 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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.