Alastair Cook says that England's repeated batting collapses are "really frustrating" after England lost their series with Pakistan 2-0.
On the final day of the third Test and resuming on 46-2 in pursuit of an unlikely 284, England lost four wickets for 11 runs in the first hour and were eventually bowled out for 156.
Head Coach Trevor Bayliss said under-fire batsman Ian Bell would need to perform well or "someone else gets a run" in the side.