McCullum vows to keep ‘firm grip’ on England players after ‘mistakes’ in winter tours

England cricket head coach Brendon McCullum has admitted that players made mistakes involving alcohol and attitude during last winter's tours of New Zealand and Australia, including struggles during the away Ashes series. McCullum has vowed to maintain a 'firm grip' on the squad to address these behavioural issues going forward. He made the comments ahead of the first Test against New Zealand at Lord's, while expressing confidence that England's best cricket is still to come.