That was the stark assessment of Rajeev Shaunak, head of travel and tourism at accountancy firm MHA MacIntyre Hudson, who said the move would "paralyse" the travel industry at its typically most busy and profitable time.
Shaunak said the plans, announced on Sunday (10 May) by prime minister Boris Johnson, to make all passengers arriving into the UK subject to a 14-day quarantine "strikes down any prospect of an early recovery for the travel or aviation industries".