The government declined to comment on the leak, but stressed that airlines are still required to check coronavirus documentation before passengers board aircraft, the Guardian reported.
Lucy Moreton, professional officer for the union that represents border, immigration and customs workers, said Border Force staff have also been told not to challenge COVID documentation.
“Certainly it will reduce queue times significantly and hopefully also the level of verbal abuse to which Border Force staff are subject,’’ Moreton told the BBC. “That is welcome to us. The impact on the U.K.’s COVID security is ultimately a scientific determination.”