Sir Keir Starmer is said to be lining up a bank holiday if England emerges victorious in the World Cup.
To celebrate what would be their first win in 60 years, the prime minister has hinted at a day off for the country, but is not expected to confirm any plans until the final.
It is thought that the bank holiday could be on Friday 24 July, which would give the team enough time to return from the final match on the previous Sunday.
Speaking to reporters at the Nato summit on Wednesday, Sir Keir said: “I don’t want to jinx it, but ask me again if we get to the final.”
After securing a 3-2 win against Mexico, England is gearing up for a quarter-final clash with Norway in Miami on Saturday.
If England wins, they will play either Argentina or Switzerland in Atlanta on 15 July.
Speaking from Ankara, Turkey, Sir Keir praised Monday’s win over Mexico as “one of the best England performances I’ve ever seen”.
He jokingly reminded Norwegian prime minister Jonas Gahr Store that England only win the World Cup under a Labour government.
“I’m a good friend of his,” he told reporters.
“The Norway-UK relationship is as strong as it’s ever been, and he’s a key individual in the coalitions that we’ve been building.
“But for 90 minutes on Saturday evening, we’ll have to go our different ways as we go into that match.”
He said he had resisted calls to attempt to overturn Jarell Quansah’s red card against Mexico, after Donald Trump persuaded Fifa to suspend US player Folarin Balogun’s ban and allow him to play against Belgium.
“I can’t tell you how many messages I’ve had to rescind the red card that we received in the early hours of Monday,” he said.
“I hasten to add, I haven’t attempted to do that.”
Many English fans were left disappointed after a bank holiday was declared in Scotland in June to mark the country’s participation in the men’s football finals for the first time in decades.
King Charles approved the proposal, put forward by First Minister John Swinney, who wanted to allow Scots to celebrate the major comeback.
Conservative leader Kemi Badenoch said she would “probably not” support a bank holiday if England wins the World Cup.
“Sadly, we all know what would happen with a bank holiday – the private sector would still be working and the public sector would take the day off, and you’d all have to pay for it,” she said.
