England's dismal Ashes tour of Australia was the catalyst for changes in the side which started with the axing of batsman Kevin Pietersen, Twenty20 captain Stuart Broad said on Friday.
Pietersen was released from his England contract after the 5-0 whitewash by Australia and the decision to discard the country's all-time leading run-scorer across all formats of the game came under intense scrutiny.
"We do have to make improvements," the 27-year-old Broad told a news conference ahead of England's tour of the Caribbean for three one-day internationals and three Twenty20 matches against the West Indies.
"The decision was taken from guys who were desperate for England to improve in the future, not just in the next four or five months.
"It was heart-breaking to lose 5-0 and we lost a lot of good men in doing that.
"It's a winter that was a disaster, but as an England side we have to look forward now. We can't dwell on it now and we must move forward."
England director of cricket Andy Flower stepped down after the Ashes series and South African-born Pietersen was informed of his fate by new England and Wales Cricket Board managing director Paul Downton and test captain Alastair Cook.