New rules requiring all people arriving in the UK to self-isolate for 14 days have come into effect.
Those arriving by plane, ferry or train – including UK nationals – must give an address where they will self-isolate. Rule breakers will be fined.
Home Secretary Priti Patel has said the laws were designed “to prevent a second wave” of coronavirus.
But the boss of Ryanair has said the rules are a “political stunt” and are not a quarantine.
Michael O’Leary told the BBC: “You could be in Sainsbury’s, you could be on the beach, you could be on the golf course in the unlikely event the Home Office calls you – all they will have is a mobile number.”
He claimed even the Home Office acknowledged the rules were unenforceable.
Some industries have warned they will be severely impacted by the rules, and Mr O’Leary warned of devastation.