Jason Roy’s impressive World Cup has earned him a call-up for next week’s four-day Test against Ireland at Lord’s, but England’s Ashes preparations have been hit by the news that Mark Wood and Jofra Archer look set to miss the start of the series against Australia.

Roy scored 443 runs in seven innings during England’s successful World Cup campaign and has been given his first opportunity at Test level after being branded “the complete player” by the national selector, Ed Smith.

However, winning the tournament for the first time has come at a cost for England, with the news that their two quickest bowlers, Wood and Archer, will enter the five-Test Ashes series under an injury cloud.

Both are suffering from side strains, with Wood the more serious – Smith confirmed the 29-year-old will be missing for four to six weeks. That would possibly rule Wood out until the fourth Test at Old Trafford in early September.

Archer made his England debut only at the start of the summer and has yet to make a Test appearance. But he was the team’s leading wicket-taker at the World Cup and bowled the decisive super over at the conclusion of Sunday’s dramatic victory in the final against New Zealand at Lord’s.

The 24-year-old has flown to his native Barbados for a week to rest and recharge with family and friends. England are more positive on his recovery time but admit privately the first Test at Edgbaston, starting on 1 August, may be too soon.

Pressed on Archer’s fitness, Smith said: “We don’t know that at the moment. He has a side injury. He’s having a bit of a break now because he’s played a lot of cricket and has been a central protagonist in one of the great stories in sport. He will get every medical attention that we can give so that he will be fit as soon as possible.”

On Wood Smith added: “The medics have given it four to six weeks. Hopefully he’ll be available for the back end of the Ashes.”

Quick Guide England Test squad to face Ireland Show England Test squad to face Ireland Joe Root (Yorkshire, captain) Moeen Ali (Worcestershire) Jimmy Anderson (Lancashire) Jonny Bairstow (Yorkshire) Stuart Broad (Nottinghamshire) Rory Burns (Surrey) Sam Curran (Surrey) Joe Denly (Kent) Lewis Gregory (Somerset) Jack Leach (Somerset) Jason Roy (Surrey) Olly Stone (Warwickshire) Chris Woakes (Warwickshire)

One man who is now expected to play a full part in the Ashes is Roy, who has made 84 ODI appearances for England and has a first-class average of 38.38. Although he has played only three first-class matches for Surrey in 22 months and has yet to open for the county in that format, the 28-year-old has been backed to succeed after Smith revealed he had hatched plans a while back with Joe Root, the Test captain, to select him for the Ashes.

“It’s no great secret the selectors have long been admirers of Jason,” said Smith. “Joe Root and I spoke at length months ago about the scenario in which Jason Roy finished the World Cup confident, full of runs and went straight into the Ashes and that’s what we’ve done. It feels like a really good time for Jason to join the Test team as an opener. He’s in and has our full backing.

“There’s never been any doubt about his talent, audacity or presence at the crease – it’s fantastic . He’s also gained improved mastery and adaptability. I think he’s a more complete player now than he ever has been.”

Along with Roy, there was also a first Test call-up for the seam bowler Lewis Gregory, who has taken 44 County Championship wickets at 13 for Somerset this summer. Olly Stone is also included for the match against Ireland that starts next Wednesday. The Warwickshire fast bowler returned from a back injury only at the start of this month and has yet to make his Test debut despite being part of the squads for England’s tours of Sri Lanka and the West Indies last winter.

Jimmy Anderson is also a surprise inclusion as he is still recovering from a torn hamstring. “He is making very good progress – if he is good to go, he will play in the Ireland Test,” said Smith. “If he is deemed too big a risk, he will not play, or the third scenario is that he sends down a certain amount of overs to make sure he gets just the right amount of work before the Ashes.”

Meanwhile Trevor Bayliss has been offered a chance to return to Kolkata Knight Riders when he leaves his post as England coach in September. The Australian won two Indian Premier League titles with the franchise before he joined England in 2015 and will make a decision on whether to return in the next 48 hours.