However, a serious-looking injury to Barcelona midfielder Walsh dampened what was a positive, attacking performance from the Lionesses after a scrappy 1-0 win over Haiti in their opening group match.

Walsh went down under little contact and immediately gestured to the dugout, appearing to say: "I've done my knee." Visibly in pain, she was taken off on a stretcher after 38 minutes.

The sight of an injured Walsh - arguably England's most crucial player - flattened the atmosphere in a Sydney Football Stadium dominated by Lionesses supporters.

Denmark capitalised on the change of mood, creating a chance for ex-Chelsea striker Pernille Harder which she scuffed wide, though England's half-time lead was deserved.

James continued to impress throughout, providing the creativity and unpredictability that has excited fans in the Women's Super League, and showing she is more than deserving of a regular starting spot with England.

She had chances in the first half either side of a header from Lucy Bronze which went over the bar, though Denmark pounced on defensive errors with Rikke Madsen and Janni Thomsen coming close.

Denmark continued to search for an equaliser and almost found one when substitute Amalie Vangsgaard - who scored a 90th-minute winner against China - headed a cross against the right post.

But on the whole they did not test goalkeeper Mary Earps enough, while England had further chances through striker Alessia Russo and substitute Bethany England.

"It's all about winning games of course. We also want to play well. But we never take anything for granted," said England manager Sarina Wiegman.

"We have to work really hard every time we play any game. We are really happy with the 1-0 in the end and that's what counts."

England cannot confirm a place in the last 16 until they face China - who beat Haiti 1-0 - in their final Group D match on Tuesday, while Denmark face Haiti and can also still qualify.

England moving through the gears

There were concerns after England's opening victory over Haiti, a side ranked 49 places lower than the Lionesses, as they lacked ruthlessness and had not scored a goal from open play in 337 minutes.

So when Wiegman's team selection included exciting talent James, there was an expectation for England to attack and create chances.

They did that from the first minute - with James at the centre of it as she combined nicely with Ella Toone as well as Aston Villa striker Rachel Daly, who returned to the left-back role she held during Euro 2022.

It paid off as the familiar sound of England's celebrating fans singing "Sweet Caroline" at full-time rang around the stadium.

But the Lionesses still spurned opportunities to extend their lead and had a nervous spell in the first half when Denmark took advantage of a misplaced pass by Daly at the back and loose possession in midfield.

England's lead at half-time was still fair reward, though the players headed down the tunnel with their heads bowed having witnessed Walsh's injury misery not long before.

"I thought this game we started really well," Wiegman told BBC Radio 5 Live. "We wanted to exploit the pockets and get in behind and that's what we did really well.

"When Keira [Walsh] got injured, we had to find our feet again. We needed to adapt to a new situation then and we really showed our resilience. I'm very proud of the team and how we did that."

Lauren James has now scored twice in 13 appearances for England

The second half continued in much the same way as the first - England controlling play, while Denmark maintained a threat and Lars Sondergaard's side almost had a breakthrough when Vangsgaard's header bounced dangerously off the upright.

But on the whole, this was a far more composed performance than the one England produced in Brisbane just six days earlier.

Denmark manager Sondergaard said: "England got confidence through a beautiful goal. Then we grew into the game. If we had been good enough or precise enough we could have punished them.

"In the second half we went out playing with a little bit more confidence and we saw that England got a little insecure.

"I'm happy with the way we ended the game. I would say we did very well against a good England team. I feel sorry for England that they lost Walsh and I hope it's not as bad as it looks."

Walsh's injury casts fresh doubts

The build-up to England's World Cup campaign was dominated by the absences of three injury-hit key figures: Leah Williamson, who captained the Lionesses at Euro 2022, Chelsea playmaker Fran Kirby and Ballon d'Or runner-up Beth Mead.

Already facing a challenge to recreate the momentum they enjoyed on home soil last summer, this fresh injury to Walsh will be a devastating blow if it proves to be significant.

She was player of the match in the Euro 2022 final and earned a world-record transfer move from Manchester City to Barcelona, having proven her worth during the tournament.

England are not short of squad experience in midfield with Jordan Nobbs having picked up 71 caps since making her debut in 2013, but Walsh's most direct replacement Laura Coombs has played just six times since 2015 - including her substitute display against Denmark.

The Lionesses' challenge of fighting off the likes of European giants Germany and back-to-back world champions the USA to win this tournament has likely been made even harder.