BRENDON McCULLUM warned his bid to turn around the fortunes of England’s faltering white-ball sides may take time but he has the utmost confidence his methods will pay off.

England fell flat in McCullum’s first series since aligning the head coach roles, losing 4-1 in T20s to India and finishing on a downer after being thrashed by a record margin of 150 runs in Mumbai.

McCullum, though, has no regrets about wanting to implement a “watchable” brand of cricket, with batters urged to go full throttle despite lingering doubts about how effective they are against spin.