Tata Consultancy Services subsidiary Diligenta has won $200 million BPO contract.According to a release issued by TCS to the BSE today, the contract is to deliver Business Process Outsourcing services to support Sun Life Financial of Canada UK's (SLF UK) operations. The services, expected to commence in May 2008, are estimated to be worth US $200 million (UK pound 100 million) over the life of the contract.Diligenta has been working with SLF UK as preferred supplier since October 2007, following a competitive tender which came towards the natural end of SLF UK's existing outsourcing agreement. Diligenta will continue to run the operation in Basingstoke where SLF UK's Head Office is based."The deal with SLF UK underlines the strength of TCS's Diligenta strategy, launched in 2006. Our vision was to establish a centre of excellence in the UK to capitalise on the growing BPO trend and to cultivate new opportunities in this sector," said A S Lakshminarayanan, vice-president and country head, TCS UK & Ireland. "With the Sun Life Financial deal, Diligenta is moving into the second phase of its history, expanding its client base and UK market share and we are confident it heralds further growth for Diligenta."