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Company lists · Data refreshed September 2026

Top 25 Retail customer service outsourcing companies based in the United Kingdom

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 334 companies tracked

RevenueBase identified 334 retail customer service outsourcing companies headquartered in the United Kingdom as of September 2026 and tracks 32,813 professional contacts across them, including 6,373 with verified work emails and 1,136 with mobile numbers. London is the largest hub.

This list covers retail customer service outsourcing 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. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
334Companies
32,813Contacts tracked
6,373Verified emails
1,136Mobile numbers
Explore all 334 companies → Free signup · no credit card · 500 free credits

The 25 largest retail customer service outsourcing companies based in the United Kingdom

Ranked by team size
Top 25 of 334 retail customer service outsourcing companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names retail customer service outsourcing companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
CapitaIndirect evidence
London, United KingdomHQ checked Sep 5, 202610001+20,824

“Capita is an outsourcer, helping clients across the public and private sectors run complex business processes more efficiently, creating better consumer experiences.”

Source: company website · checked Sep 5, 2026
2
AscensosIndirect evidence
Motherwell, United KingdomHQ checked Sep 5, 20261,001-5,0001,244

“Ascensos is now Firstsource.”

Source: company website · checked Sep 5, 2026
3
Convergys Intelligent ContactIndirect evidence
Altrincham, United KingdomHQ checked Sep 5, 202610001+873

“At Convergys Intelligent Contact, we build sustainable revenue streams for our clients.”

Source: company website · checked Sep 5, 2026
4
Tsys Managed Services EmeaIndirect evidence
Milton Keynes, United KingdomHQ checked Sep 5, 20261,001-5,000654

“TSYS is the market leader for credit card processing in the United Kingdom, supporting a number of the key credit card issuers in the region.”

Source: company website · checked Sep 5, 2026
5
Kura CS LTDIndirect evidence
Glasgow, United KingdomHQ checked Sep 5, 20261,001-5,000595

“Kura is a global CX outsourcer.”

Source: company website · checked Sep 5, 2026
6
Vertex Data ScienceStrong evidence
London, United KingdomHQ checked Sep 5, 202651-200569

“Vertex is a leader in BPO and Customer Management Outsourcing, serving over 200 clients worldwide across many sectors.”

Source: company website · checked Sep 5, 2026
7
MoneypennyPartial evidence
Wrexham, United KingdomHQ checked Sep 5, 20261,001-5,000530

“Moneypenny is the leading customer conversations partner to businesses across the UK and US, blending exceptional people with proprietary AI technology to deliver trusted caller…”

Source: company website · checked Sep 5, 2026
8
RESQPartial evidence
Kingston Upon Hull, United KingdomHQ checked Sep 5, 20261,001-5,000490

“Give your customers a voice with ResQ.”

Source: company website · checked Sep 5, 2026
9
ANT MarketingIndirect evidence
Sheffield, United KingdomHQ checked Sep 5, 2026501-1,000327

“Skilled talent, proven processes and leading technology.”

Source: company website · checked Sep 5, 2026
10
VentricaIndirect evidence
Southend-on-sea, United KingdomHQ checked Sep 5, 2026501-1,000318

“Ventrica is a global leader in delivering emotive CX through BPO.”

Source: company website · checked Sep 5, 2026
11
The Contact CompanyPartial evidence
Birkenhead, United KingdomHQ checked Sep 5, 20261,001-5,000312

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

Source: company website · checked Sep 5, 2026
12
Clearanswer Call CentresIndirect evidence
Hull, United KingdomHQ checked Sep 5, 2026501-1,000205

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

Source: company website · checked Sep 5, 2026
13
Interact Contact CentresPartial evidence
Richmond, United KingdomHQ checked Sep 5, 2026501-1,000162

“We are a leading UK customer experience outsourcer, recently named Gold winners for L&D Team of the Year 2025, Best Contact Centre Culture (Large) 2024 and Outsourced Contact…”

Source: company website · checked Sep 5, 2026
14
Echo-U LTDIndirect evidence
Newcastle Upon Tyne, United KingdomHQ checked Sep 5, 2026201-500140

“Echoing our clients in every conversation.”

Source: company website · checked Sep 5, 2026
15
We ARE WovenPartial evidence
Bristol, United KingdomHQ checked Sep 5, 20261,001-5,000132

“Dedicated and shared contact centre outsourcing operations.”

Source: company website · checked Sep 5, 2026
16
Route 101 LTDPartial evidence
Bristol, United KingdomHQ checked Sep 5, 202651-200131

“Route 101 offers award-winning customer engagement solutions that help you reduce operational costs, enhance efficiency, and deliver a next-generation customer experience (CX).”

Source: company website · checked Sep 5, 2026
17
FOCUSStrong evidence
Manchester, United KingdomHQ checked Sep 5, 2026201-500118

“Focus is a UK-managed outsourcing partner with a large dedicated offshore delivery team, built and proven inside real UK retail operations before we opened it to other brands.”

Source: company website · checked Sep 5, 2026
18
EC Outsourcing Powered By Ison XperiencesPartial evidence
Doxford International Business Park, United KingdomHQ checked Sep 5, 20261,001-5,000114

“EC Outsourcing is one of the UK's leading outsourced contact centres.”

Source: company website · checked Sep 5, 2026
19
Step Change OutsourcingPartial evidence
Stevenage, United KingdomHQ checked Sep 5, 2026201-500112

“Step Change Outsourcing is a growing contact centre working in partnership with some of the UK’s largest brands for over 15 years.”

Source: company website · checked Sep 5, 2026
20
Tchgroup The Consumer HelplineIndirect evidence
Swansea, United KingdomHQ checked Sep 5, 2026201-50099

“Our business is your business.”

Source: company website · checked Sep 5, 2026
21
Rsvp Media Response LTDIndirect evidence
London, United KingdomHQ checked Sep 5, 2026201-50098

“Founded in 1988, RSVP is the oldest provider of contact centre services in the UK.”

Source: company website · checked Sep 5, 2026
22
Youpro ContactPartial evidence
London, United KingdomHQ checked Sep 5, 202651-20090

“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…”

Source: company website · checked Sep 5, 2026
23
Partner Retail Services PRSPartial evidence
Marlow, United KingdomHQ checked Sep 5, 2026201-50088

“Partner Retail Services (PRS & ) is wholly owned by entrepreneur, Peter Jones CBE, founder of the Peter Jones Investment Group.”

Source: company website · checked Sep 5, 2026
24
FM OutsourcePartial evidence
Bury, United KingdomHQ checked Sep 5, 2026201-50083

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

Source: company website · checked Sep 5, 2026
25
SubferoIndirect evidence
Bristol, United KingdomHQ checked Sep 5, 202651-20083

“We are Subfero.”

Source: company website · checked Sep 5, 2026

Showing 25 of 334 retail customer service outsourcing companies based in the United Kingdom

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Retail customer service outsourcing companies based in the United Kingdom at a glance

As of Sep 5, 2026
11-50Median size (employees)
LondonLargest hub · 94 HQs
1,136Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
94
11-50
98
51-200
76
201-500
34
501-1,000
11
1,001-5,000
14
10001+
3

Verified emails by last verification

0–30
5,994
31–60
333
61–90
1
90–180
1
180+
44

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among retail customer service outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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
Companies headquartered in the United Kingdom whose own description of what they do matches “retail customer service outsourcing companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among retail customer service outsourcing companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 6,373 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Retail customer service outsourcing companies by metro

  • Retail customer service outsourcing companies in London94

Frequently asked

How many retail customer service outsourcing companies are there based in the United Kingdom?

RevenueBase identified 334 retail customer service outsourcing companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

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

Which city has the most retail customer service outsourcing companies?

London leads with 94 headquartered companies, followed by Manchester (13) and Bristol (10).

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 6,373 verified decision-maker contacts tracked across these 334 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 334 retail customer service outsourcing companies based in the United Kingdom. Start with a free account, no credit card.

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Related lists

Retail customer service outsourcing companies by geography

Browse: Companies home · All United Kingdom lists · All Retail customer service outsourcing companies lists · New lists

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.

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