Cricket-England's Brook admits he needs to rein himself in with Ashes on the line

England's Harry Brook in action. REUTERS/Asanka Brendon Ratnayake/File Photo

SYDNEY, Dec 15 (Reuters) - England batter Harry Brook admits that he might need to curb his aggressive instincts a little bit when the Ashes go on the line in the third test in Adelaide this week.

Coach Brendon McCullum insisted on Sunday that England's aggressive style of batting will not change despite heavy defeats in the first two tests.