Brendon McCullum has left his role as England’s Test head coach but will remain in charge of the white-ball set-up.McCullum has paid the price for a poor run of red-ball form with a 4-1 defeat in last winter’s Ashes followed by a 2-1 home loss to New Zealand last month, which occurred amid the backdrop of another off-the-field incident under the watch of the Kiwi coach.Ben Stokes announced his international retirement midway through defeat at Trent Bridge and that will prove the final Test of McCullum’s England red-ball tenure.It started in extraordinary fashion in 2022 with ‘Bazball’ taking the cricket world by storm. England’s bold and fresh attack-minded approach under McCullum and Stokes led to 3-0 series wins over New Zealand and in Pakistan, where 500 runs were scored in one day, bef