England captain Alastair Cook believes that the ICC Champions Trohy 2013 tournament is a tough one and teams will have to be on their toes as there is not much room to bounce back.

According to AFP,  Cook says he will not be thinking of the upcoming Ashes series when his team faces old foes Australia in their Champions Trophy opener at Edgbaston on Saturday.

"With the Ashes coming up everyone is going to talk about that," Cook told reporters at the Birmingham ground on Friday.

"The Champions Trophy is such an important event in itself. You obviously want to start well against any team. We're going to play against a tough Australian side and we want to win to get off to a good start," the opening batsman, looking to lead England to a third straight Ashes Test series win, added.

Cook said an initial win was important to improve chances of taking one of the two semi-final berths from Group A, which also includes New Zealand and Sri Lanka.