TCS has been operating in the UK & Ireland for more than thirty years, and has over 4800 associates working on more than 65 client sites as well as an Innovation Lab in Peterborough. Over 170 UK customers work with TCS and its UK subsidiary, Diligenta Ltd which employs a further 950 staff. Diligenta entered the UK Business Process Outsourcing market in 2006 having secured a £468m deal with Pearl, the closed fund group.
Part of the local business and social fabric, TCS also participates in the activities of leading UK institutions such as the Confederation of British Industry, the British Computer Society, and Business in the Community as well as several academic partnerships.