Sir Keith, a director at Tottenham Hotspur, had been considered the ideal candidate as one of the original architects of an Olympic bid that has promised as one of its legacies to convert millions of couch potatoes into sport enthusiasts. His refusal will add to concerns that the top job at Sport England, which delivers grassroots sport for the Government, is a poisoned chalice. It may also put in the frame Stuart Smith, president of the Lawn Tennis Association.