Joe Root has hailed limited-overs captain Eoin Morgan's role in England's path to the World Twenty20 final, as well as the calming influence of coach Trevor Bayliss.

England overcame New Zealand by seven wickets in the first semi-final in Delhi on Wednesday, despite Morgan being dismissed for a golden duck for the second time at the competition.

However, a sublime 78-run knock from Jason Roy helped book a place in the final against West Indies at Eden Gardens in Kolkata on Sunday.

Despite the captain being short of runs in India, Root was in no doubt he had played a pivotal role in steering England into the final two.

"[Morgan's captaincy] has been fantastic  across one-day cricket and T20 cricket. We have not taken a step back, we have kept going forward," said Root.

"We've chosen this way and approach, which has probably been a bit of a shift for us, and we've stuck to our guns.

"That's a massive factor in how we've got here. The management have been very calm, a positive management that has supported Eoin's view on how we need to go forward.

"[The] guys have gone out and been brave and played the way the captain has asked them to.

"We've kept wanting to improve and when it's gone wrong we've not taken a step back, we've looked forward every time."

Root also lauded the influence of coach Bayliss, who has kept the team grounded throughout the World T20.

"Trevor has been great throughout. He's got an emotionless face, whether we feel like we're in front of the game or feel massively behind it, you never get any sort of tension or emotion from him," he added.

"You dream of these opportunities as a kid, to play a World Cup final, and every time over the past couple of days I've looked round the dressing room the lads have just been smiling.

"I think everyone is excited and can't wait to get out there on Sunday, but it always feels like Trevor is very calm and relaxed about everything. Whether that's the case under the surface I'm not sure.

"That's one thing that's really important in these tournaments, especially in the final, having that calm head in the dressing room that can bring you back down when you get too high or give you a lift if you need one."