England are set keep faith with Jos Buttler despite defeat to West Indies in the first Test of a three-match series, but time may be up for Joe Denly.

Captain Joe Root is set to return for the second Test starting on Thursday at Old Trafford after missing the four-wicket defeat in Southampton to attend the birth of his second child.

The England selectors have big decisions to make after again losing the game with the bat rather than the ball despite the controversial omission of Stuart Broad.

An under-par 204 in the first innings and the loss of five wickets for 30 runs on the fourth evening set the platform for the tourists to take first blood.

Denly and Buttler were involved in both passages and find themselves increasingly under pressure for their places -- the former being squeezed by Root's return and Zak Crawley's fine 76 on Saturday, the latter from Surrey gloveman Ben Foakes.

England head coach Chris Silverwood, though, has only offered strong reassurance to one of the duo.

Buttler has a Test average of just 23.22 since the start of 2019 and now only one hundred in 75 innings.

"I'm not gonna go down that road yet of putting Jos under pressure, because I don't think it's going to help him," said Silverwood. "First and foremost we want to give Jos the best opportunity to succeed.

"But I'm sure he is asking the same questions. He looked brilliant coming into this game, in practice and everything and he looked very good in the first innings. He just needs to go and make those big scores now doesn't he? He knows that as well.

"From our point of view it's just making sure that he feels confident in the environment he's in."

There looks certain to be change higher up the order, though, with Denly's knocks of 18 and 29 doing little to show that he can haul his performances up to the required standard for a long-term Test number three.

At just 22, Crawley is 12 years Denley's junior and by producing England's top score of the match in tense circumstances in the second innings he appeared to make an irresistible grab for the shirt.

"We're all desperate to see Joe do really well. We can see he's trying hard, he's training hard and he's a great bloke, hence why we all went to see him do well," said Silverwood.

"But obviously he's under pressure a little bit, yes. Zak is improving constantly. I think he certainly showed maturity and the innings he played was very good.

"We have some young players in that side that seem to have good heads on their shoulders, and he's one of them. That's what we are looking for."