Update 2021-03-06 (2): According to U.K. authorities on Saturday (06 March), travellers entering Portugal on indirect flights from the U.K. require a negative COVID-19 test taken 72 hours prior to their departure. In addition, a two-week quarantine requirement applies upon arrival. This regulation is valid for the time being until 16 March.
Update 2021-03-06 (1): Austria extended its landing ban for passenger flights from the United Kingdom until 21 March.