Tottenham Hotspur v Sheffield United - Premier League

LONDON, ENGLAND - MAY 02: Match Officials, (L - R) Scott Ledger, Andre Marriner and Simon Long warm up wearing t-shirt's that have writing detailing information about the 'don't x the line campaign', which aims to eliminate and raise awareness for the problems referees face is worn by match officials as they warm up prior to the Premier League match between Tottenham Hotspur and Sheffield United at Tottenham Hotspur Stadium on May 02, 2021 in London, England. Sporting stadiums around the UK remain under strict restrictions due to the Coronavirus Pandemic as Government social distancing laws prohibit fans inside venues resulting in games being played behind closed doors. (Photo by Justin Setterfield/Getty Images)