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40. Firstsource Solutions

  • Managing director: Rajesh Subramaniam
  • Pre-tax profit: £9.9m
  • Employment: 3,687
  • Pay bill: £60m

Call centre giant Firstsource has been operating in Northern Ireland since 2006 and Sky is one of its key clients across its sites in Belfast and Londonderry.

There are a total of 951 employees working with Sky in Londonderry and 386 in Belfast.