The consumer champion on Wednesday (4 August) issued a warning to holidaymakers, advising them against booking with 20 travel firms "based on shortcomings with their booking terms and commitments to refunding customers in the event of coronavirus-related disruption".
However, 13 of the 20 red-listed companies – two-thirds – were given red ratings for an alleged "lack of transparency" after Which? said they failed to respond to "repeated requests for information" on their refund policies.