At a pre-match news conference in Gelsenkirchen yesterday, England manager Gareth Southgate was quizzed on the security concerns surrounding today’s opener.

Asked for his message to supporters, he told the reporter: “I expect everybody to enjoy the football.

“I’ve been fortunate to be involved in a lot of tournaments, and travel to tournaments I’ve not been directly involved in.

“They’re great carnivals of football – an opportunity to see a different part of the world and have a brilliant time, so I’m sure everybody is coming to do that.”

He added: “I hope the whole of Europe can come together for the brilliant game that we’re involved in and support their team.”

Officials have designated England’s opening fixture as a “high-risk” event, with fans served lower-alcohol beer in the stadium and banned from drinking in the stands.

Policing the first game has been made more challenging by UEFA asking for the barriers to be removed inside the stadium, with both sides being seated closer together, and two-thirds of tickets going to mixed areas.

German police Chief Inspector Christof Burghardt told Sky News previously: “I think it’s a very high-risk game because of the history, because of the hooligans both sides have.

“Serbia has many hooligans. The English guys, with alcohol, they are sometimes very aggressive. So it’s a great job to do this, to prepare, so that hopefully nothing will happen.”