Company lists · Data refreshed September 2026

Top 25 Offshore outsourced services based in the United Kingdom

RevenueBase identified 402 offshore outsourced services headquartered in the United Kingdom as of September 2026 and tracks 28,610 professional contacts across them, including 5,168 with verified work emails. London is the largest hub.

This list covers offshore outsourced services 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
402Companies
28,610Contacts tracked
5,168Verified emails
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The 25 largest offshore outsourced services based in the United Kingdom

Ranked by team size
Top 25 of 402 offshore outsourced services based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to offshore outsourced services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLondon, United KingdomHQ checked Sep 21, 202610001+20,824 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceAltrincham, United KingdomHQ checked Sep 21, 202610001+873 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceLondon, United KingdomHQ checked Sep 21, 202651-200569 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 21, 20261,001-5,000327 contacts →

Partial evidence

“Damco Solutions Limited is a specialist software solutions and services & a business process outsourcing services company.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceBirkenhead, United KingdomHQ checked Sep 21, 20261,001-5,000312 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceMilton Keynes, United KingdomHQ checked Sep 21, 202651-200146 contacts →

Partial evidence

“At The Dot HQ, we empower businesses with a full spectrum of offshore resource solutions, ensuring efficiency, compliance and growth.”

Source: RevenueBase Database · checked Sep 21, 2026
7Strong evidenceManchester, United KingdomHQ checked Sep 21, 2026201-500118 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceLondon, United KingdomHQ checked Sep 21, 2026201-500103 contacts →

Partial evidence

“we redefine business process outsourcing, empowering companies to broaden their horizons.”

Source: RevenueBase Database · checked Sep 21, 2026
9Strong evidenceLondon, United KingdomHQ checked Sep 21, 202651-20090 contacts →

Strong evidence

“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: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceBury, United KingdomHQ checked Sep 21, 2026201-50083 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceBristol, United KingdomHQ checked Sep 21, 202651-20083 contacts →

Indirect evidence

“We are Subfero.”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceLondon, United KingdomHQ checked Sep 21, 2026201-50070 contacts →

Partial evidence

“We are a 400 member strong, specialist business process outsourcing (BPO) provider that caters to the diverse and complex information processing needs of todays corporation.”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceLondon, United KingdomHQ checked Sep 21, 202651-20066 contacts →

Partial evidence

“QORMOTHO is a global outsourcing company.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceLondon, United KingdomHQ checked Sep 21, 202651-20062 contacts →

Partial evidence

“Support Adventure is an outsourcing company that specializes in customer service and support.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceLondon, United KingdomHQ checked Sep 21, 202651-20046 contacts →

Partial evidence

“Direct Response can provide outsourcing of voice, data and contact centre services for organisation from a global business to a one-man operation, delivering outstanding service…”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceShadsworth Business Park, United KingdomHQ checked Sep 21, 202651-20041 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceLondon, United KingdomHQ checked Sep 21, 202611-5040 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceCroydon, United KingdomHQ checked Sep 21, 2026501-1,00039 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceManchester, United KingdomHQ checked Sep 21, 2026201-50036 contacts →

Indirect evidence

“BPO & Technology Solutions | Contact Center Optimization | Scalable Operations As a leader at Sensible Group, I specialize in delivering high-performance BPO solutions tailored…”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceUk, United KingdomHQ checked Sep 21, 202651-20035 contacts →

Partial evidence

“Taskaler is a business process outsourcing (BPO) provider specialising in customer services and back-office support for retail and eCommerce.”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceLondon, United KingdomHQ checked Sep 21, 202611-5035 contacts →

Partial evidence

“Auxilium Digital helps businesses with limited resources, higher operational costs achieve utmost customer satisfaction through providing customized offshore development teams…”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceTyne & Wear, United KingdomHQ checked Sep 21, 202611-5033 contacts →

Indirect evidence

“We are an award-winning customer experience optimisation provider based in the UK, delivering seamless 24/7 back and front office solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceLondon, United KingdomHQ checked Sep 21, 202611-5033 contacts →

Partial evidence

“SystemRapid - inner feelings.outsourced.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceLondon, United KingdomHQ checked Sep 21, 202651-20033 contacts →

Partial evidence

Offshore Team is a British-owned technology company based in the Philippines.”

Source: RevenueBase Database · checked Sep 21, 2026
25Partial evidenceBromsgrove, United KingdomHQ checked Sep 21, 202611-5032 contacts →

Partial evidence

“Almost every business can save time and money with smart outsourcing from Go-To - how much depends on you.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 402 offshore outsourced services based in the United Kingdom

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Offshore outsourced services based in the United Kingdom at a glance

As of Sep 21, 2026
18.1%Verified-email coverage
71.2Average contacts per company
11-50Median size (employees)
45.0%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
142
11-50
136
51-200
74
201-500
26
501-1,000
11
1,001-5,000
6
5,001-10,000
1
10001+
3

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 402 companies.

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 offshore outsourced services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “offshore outsourced services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names offshore outsourced services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among offshore outsourced services, 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 its RevenueBase Smart Search 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, 5,168 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 21, 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.

Offshore outsourced services by metro

  • Offshore outsourced services in London181

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names offshore outsourced services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many offshore outsourced services are there based in the United Kingdom?

RevenueBase identified 402 offshore outsourced services 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 offshore outsourced services?

London leads with 181 headquartered companies, followed by Manchester (14) and Birmingham (11).

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 5,168 verified decision-maker contacts tracked across these 402 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 21, 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 Smart Search, 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.