Which mobile network has UK call centres?

Several UK mobile networks operate call centres within the UK. 

Here are some of them:

EE: EE has all its call centres based in the UK, with major centres in locations like Plymouth, Merthyr Tydfil, Greenock, Darlington, North Tyneside, and Doxford.

Vodafone: Vodafone's customer service operations in the UK are primarily handled through a mix of overseas call centers and some UK-based teams, but the main customer-facing call centers are not located in the UK. While Vodafone has a significant presence in the UK, including a major contact center in Stoke-on-Trent, this center is focused on sales and customer relations rather than traditional customer service calls.

O2: While O2 has some UK-based call centres, they also operate centres in India and South Africa.

Plusnet Mobile: Plusnet's customer contact centres are based in Leeds and Sheffield, maintaining a strong UK presence.

SKY Mobile Sky operates several UK-based call centres, including locations in Scotland and England.

Virgin Media Although Virgin Media has some UK-based call centres, the majority of their calls are handled offshore, primarily in India.

EE stands out for having all its call centres in the UK, which can be beneficial for customers who prefer to interact with local representatives.