More than 60,000 football fans will be allowed to attend the semi-finals and final of Euro 2020 at Wembley.
They will be the largest crowds at a UK sporting event in more than 15 months.
All ticket holders for the matches on 6, 7 and 11 July must be able to show a negative COVID-19 test or proof of full vaccination – 14 days before each fixture.
Those registered with a GP in England will be able to display their proof of immunisation via the NHS App or a printout.
A negative lateral flow test can be shown via email, a text message or the NHS App.
Further details, “including on ticket sales for these matches”, will be given by UEFA in due course, the culture department (DCMS) said.
“It is expected ticket holders in the UK who lost their tickets for the semi finals and final in the re-ballot will be at the front of the queue to be at the games,” it added.
DCMS said other events in the summer sporting calendar, including Wimbledon, the Challenge Cup Final and men’s international cricket involving England, Pakistan and Sri Lanka will “also go ahead with greater capacities”.
It is part of the government’s Events Research Programme as the UK gradually emerges from the coronavirus pandemic.