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.