Last update on.Last week, 140,000 people attended the British Grand Prix at Silverstone.The Football Supporters Association warns that making proof of vaccination compulsory for Premier League matches could lead to "chaos" at certain clubs.Sports venues that have a capacity of more than 20,000 may require proof of vaccination starting in September.Malcolm Clarke, chairman of FSA, stated that he believes they must have the resources necessary to conduct checks with large football crowds."I don't think all football clubs can manage that in a way which doesn't cause chaos."BBC Sport has learned that the Premier League and its clubs are already discussing how they will check fans for entry into stadiums next season.They plan to use the first few matches of the season, before any rule changes are made, to test certification.Boris Johnson, Prime Minister of the United Kingdom, announced Monday that he plans to require certification in nightclubs and other venues where large numbers gather.Thursday's statement by Nadhim Zahawi, the vaccines minister, was made to the House of Commons. He said that as a condition of admission to watch sports events, "people will need proof that they have been fully vaccinated. A negative test will not suffice."Last week's British Grand Prix at Silverstone saw a capacity crowd of 140,000, the largest attendance for any sporting event in the UK since before the outbreak of coronavirus.All adults must show proof of vaccination or negative testing.Mark Palios is the former chief executive of the Football Association and the owner of Tranmere Rovers. He said that football clubs would like to play their part.He said that logistics and practicalities will likely be easy since we all have experience working in challenging conditions.It will undoubtedly hurt finances, but it won't be disastrous for clubs. It will be unwelcome financially, but clubs will do it if it's right."More than 60,000 people were allowed to attend the Euro 2020 semi-finals and final at Wembley by the UK governmentThe UK government permitted Wembley's crowd capacity to be increased to over 60,000 to accommodate the semi-finals as well as the final of Euro 2020.Fans attending Wembley were allowed to enter under the government's Events Research Programme. They had to meet strict entry requirements such as a negative Covid-19 or proof of vaccination.Sir Patrick Vallance, chief scientific advisor, stated Monday nightclubs and similar venues could become "potentially super-spreading" events due to close contact between people.Premier League executive director Bill Bush stated to the All-Party Parliamentary Group about coronavirus in May that a "single magic bullet like a vaccine passport" was too narrow and prescriptive.He stated that he would like to work with the government to find a "broader-based solution" to event certification.