England's joy will be tempered by the knowledge that the Indians put up weak opposition. Away test series are never their forte but even by their standards, not scoring above 178 in their last five innings of the series is a poor effort.
There is also concern over some departments in England's lineup. There are still doubts about Sam Robson as Cook's opening partner, and worries about the dependence on Broad and Anderson and whether Moeen Ali can keep up his surprisingly good form as the team's part-time spinner.
But Cook will point to the resurgence of middle-order batsman Joe Root, who scored 518 runs an average of 103.50 this series, the seamless introduction to the team of wicketkeeper Jos Buttler and the blossoming of Chris Jordan as the third fast bowler.