Tesco has announced that former Marks and Spencer CFO Alan Stewart has joined as chief financial officer (CFO).

He will join following satisfaction of existing contractual obligations.

Stewart has been chief financial officer at a string of high street stalwarts M&S and WH Smith as well as Thomas Cook Holdings.

His appointment appears to be a boost for Tesco chief Philip Clarke who has seen a string of executive leave the retailer over the last few months.

Philip Clarke, Tesco CEO, said: “When we set out on this search we wanted a candidate who had the right blend of experience, leadership and values to play a leading role in the transformation of Tesco. We have found all three in Alan.

“I am looking forward to working alongside him and I know Tesco will benefit from the breadth and depth of his experience.”