Company lists · Data refreshed September 2026
Top 25 Back office bpo companies based in the United Kingdom
RevenueBase identified 328 back office bpo companies headquartered in the United Kingdom as of September 2026 and tracks 30,513 professional contacts across them, including 6,791 with verified work emails. London is the largest hub.
This list covers back office bpo 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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.
The 25 largest back office bpo companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,824 contacts → | ||||
Indirect 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 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,115 contacts → | ||||
Indirect evidence “QX Global Group is a sector‑led, technology‑enabled Business Process Management partner serving mid‑market organizations across the US, UK, and Ireland.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 873 contacts → | ||||
Indirect evidence “At Convergys Intelligent Contact, we build sustainable revenue streams for our clients.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 587 contacts → | ||||
Indirect evidence “For over 50 years, we have been providing technology-driven outcomes for our customers and end users.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 569 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 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 406 contacts → | ||||
Indirect evidence “In 2004, Sensée was founded on a simple principle: bring work to people, not people to work.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 327 contacts → | ||||
Indirect evidence “Damco Solutions Limited is a specialist software solutions and services & a business process outsourcing services company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 118 contacts → | ||||
Indirect 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 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 103 contacts → | ||||
Indirect evidence “we redefine business process outsourcing, empowering companies to broaden their horizons.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 74 contacts → | ||||
Indirect evidence “Streamline your business with our bespoke support services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 70 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 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 62 contacts → | ||||
Indirect evidence “Greybeard Solutions provides expert accounting outsourcing and business process automation services to SMEs worldwide.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 62 contacts → | ||||
Indirect evidence “Support Adventure is an outsourcing company that specializes in customer service and support.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 47 contacts → | ||||
Indirect evidence “Leading providers of specialist support services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 46 contacts → | ||||
Indirect 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 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 41 contacts → | ||||
Indirect evidence “Welcome to Factotum-your secret weapon for streamlined business success!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 36 contacts → | ||||
Partial 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 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 35 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 33 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 32 contacts → | ||||
Indirect 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 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 31 contacts → | ||||
Indirect evidence “Started operations in the UK in the year 1990 and incorporated as “KINDCARE LIMITED”.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 26 contacts → | ||||
Indirect evidence “SNT Group is a service led business, providing our clients with best of breed technologies and services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 25 contacts → | ||||
Partial evidence “At Freedom Outsourcing, we specialise in Business Process Outsourcing (BPO) to help businesses save money and grow faster with UK managed outsourcing solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 25 contacts → | ||||
Indirect evidence “Businesses today are under more pressure than ever before to reduce risk, drive efficiency and create consistency.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 24 contacts → | ||||
Strong evidence “Oakford Advisors Ltd, a Centralis Group company, is an outsourced business services firm which specialises in providing back-office support to start-up or existing companies…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: back office bpo companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names back office bpo companies.
- Partial evidence
- Its own public description names part of back office bpo companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name back office bpo companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 328 back office bpo companies based in the United Kingdom
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Back office bpo companies based in the United Kingdom at a glance
As of Sep 27, 2026Companies by employee count
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 328 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 back office bpo companies, 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 “back office bpo companies”. 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 back office bpo companies), 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 back office bpo 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 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, 6,791 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 27, 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.
Back office bpo companies by metro
- Back office bpo companies in London110
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 back office bpo companies, 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 back office bpo companies are there based in the United Kingdom?
RevenueBase identified 328 back office bpo 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 back office bpo companies?
London leads with 110 headquartered companies, followed by Manchester (12) and Birmingham (8).
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 6,791 verified decision-maker contacts tracked across these 328 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 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 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.
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