England stand-in Twenty20 captain Graeme Swann has warned his side they must learn the lessons of Sunday's defeat by the West Indies or they will struggle to defend their World Twenty20 crown.

On a turning pitch at the Oval England, chasing 113, were bowled out for just 88, their lowest total in T20 games, and went down by 25 runs with rookie spinner Garey Mathurin taking 3-9.