Global private equity major Blackstone has bought back the BPO business (then known as <g data-gr-id="5">Intelenet</g>) from Britain’s Serco Group for 250 million pounds (about Rs 2,558 crore), four years after it exited. “We are delighted to announce that we have completed the transaction to acquire business (of Intelenet) from Serco at an enterprise valuation of Rs 2,600 crore or 250 million pounds,” Blackstone Group Senior MD and Co-Head Private Equity in India Amit Dixit said on Wednesday.