England fans "risk getting thrown out" of World Cup stadiums if they break FIFA's "political" flag rules. Under guidelines set by football's global governing body, flags "of a political, offensive and/or discriminatory nature" are prohibited.

Fans who want to take a flag larger than two by 1.5 metres in size require written permission before getting to the stadium. Pictures of their flag also have to be submitted as part of an application process. One media report suggests some supporters were told a flag bearing the silhouette of a soldier holding a rifle would not be allowed.

GB News reports that the Football Association is aware of one England flags stating, "Keir Starmer is a n**ce".

Such a flag would also not be permitted inside stadiums, according to The People's Channel, which reports that fans who fall foul of the rules risk being thrown out of grounds.

Negative chanting about the Prime Minister also reportedly risks fans being ejected from stadiums.

Ahead of tonight's match in Dallas, an FA spokesman said the association has advised our fans that FIFA can prevent flags with "sensitive or political content" being taken into stadiums.

He added: "Our team are on hand at the ground to help review flags if needed to avoid any problems occurring."

A court in Los Angeles on Monday ruled in FIFA's favour to prevent Iran fans taking the country's pre-revolutionary flag into stadiums.

Ronan Evain, Executive Director of Football Supporters Europe, told the Guardian the rules have not been applied consistently across venues.

He said there was no consistent rule and FIFA's code of conduct is "very broad", with a lack of clarity over what kind of symbols are permitted and not permitted.

Outside stadiums, supporters have created a sea of England flags, worn fancy dress, draped themselves in St George's flags and sung chants ahead of England v Croatia.

Before England's Group L opener, Sir Keir said on Tuesday: "Tomorrow, we can dare to dream again because we have a brilliant Three Lions squad, packed with all the talent and experience to get that second star on the shirt.

"Like every England fan, I’ll be roaring on Thomas Tuchel, Harry Kane and the entire England squad. Come on England."