Top 50 Largest Contact Centres in the UK
Published On: 6th Aug 2026 09:28
Here is our list of the top 50 largest contact centres in the UK, as determined by number of agents.
One question that we get asked a lot is which are the largest call centres in the UK. So we’ve done a bit of detective work and have come up with our estimate of the top 50 largest UK call centres.
Over 5000 agents
- HM Revenue and Customs
- Hutchison 3G UK
- Serco
- BSkyB
- Stream Intelligent Contact
- Teleperformance
- Webhelp TSC
2000 – 5000 agents
- BT
- Capita
- Conduit
- Co-op / Co-op Bank
- Department of Work and Pensions
- Direct Line Group
- DVLA
- E.ON
- Firstsource
- LV=
- RWE npower
- Tesco
1000 – 2000 agents
- AA
- American Express
- Aviva
- AXA
- Barclays
- British Gas
- BUPA
- Convergys
- EE
- EON
- Esure
- First Direct
- Friends Life
- Fusion
- Home Retail Group
- HSBC
- JD Williams
- Lloyds Bank
- Nationwide Building Society
- RESPONSE
- Saga Group
- Santander
- Scottish and Southern Electric SSE
- Scottish Power
- SITEL
- Swinton
- TalkTalk
- Telefonica UK
- The Contact Company
- Virgin Media
Have we missed anyone out?
Please email the news desk if you think we’ve left anyone out, or under/over-estimated the size of any business listed.
With thanks to Steve Morrell and to everyone who responded on Twitter.
Reviewed by: Jo Robinson