Flower says England must keep building

England coach Andy Flower insists there can be no room for complacency as the team looks to build on their historic ICC World Twenty20 success.

Coach Andy Flower has preached and practised what he believes which has so far been proven a winning formula, with the substantial assistance of Paul Collingwood in the sprint format and Andrew Strauss in one-day internationals and Tests.

There was no mistaking the effort which went into England winning their first International Cricket Council tournament with victory over Australia but Flower made it abundantly clear more of the same industry lies ahead for a team he hopes are capable of sustaining their success.

"The guys have worked hard at their games, make no mistake about that, and put a lot of thought into it," said Flower.

"I think there is a long way for us to go.

"This is one form of the game. But if we talk about the England team we talk about all three forms of the game.

"We have got huge scope for improvement in various areas. We will be working hard to get better and better all the time."

The next tournament, of course - the World Cup on the sub-continent next spring - will require new ideas to stay ahead of the game.

But England can take heart for that venture from the fact almost all those who have adapted so well in the Caribbean also have the right skills for 50-over cricket.

There is no reason for a major turn-over of personnel, with only Craig Kieswetter's opening partner Michael Lumb yet to provide evidence he can challenge Strauss for an opening spot in the longer format.

Collingwood has had an obviously pivotal role.

"He has got a lot more confident about what he is doing," said the coach.

"He feels more comfortable. He has led from the front - I don't mean his batting but in his attitude.

"He has always been a bit of a driver of the environment, because he is a nuggety Englishman who will have a go at whatever is thrown at him."

Collingwood has said many times, though, that he does not want to return to the 50-over captaincy - meaning Strauss remains the leader in two formats, starting next week in the Lord's Test against Bangladesh.

Flower believes that will happen "seamlessly".

Whoever is in charge on the pitch, though, must continue to work as one with the coach.

He has helped England achieve remarkably - Ashes victory, Test series draw in South Africa, and now World Twenty20 champions - since being shoe-horned into his job after the blood-letting of January last year.