Prime Minister Boris Johnson has stressed that people shouldn’t go to “amber list” countries except in extreme circumstances as the European Union is set to allow fully vaccinated tourists into the bloc. Portugal, one of the only two places in the EU that are currently on the UK’s “green list” along with the Faroe Islands, had broken rank and started welcoming much-missed British tourists since Monday when Britons were allowed to go on foreign holidays again. EU ambassadors on Wednesday recommended during a meeting that rules should be changed to allow fully vaccinated people into the EU for non-essential visits. The European Commission welcomed the decision. The policy will need to be formally signed off by ministers of member states. A separate decision on whether to add the UK and other countries to the EU’s “safe list” will be made on Friday. Travellers from locations on the list are permitted to …