British and Spanish authorities moved to reassure UK nationals resident in Spain over their travel rights after several complained of being denied entry this weekend, amid pandemic restrictions and confusion over post-Brexit documentation. The British Embassy in Madrid called on Spanish authorities to show flexibility following the passengers' distressing experiences. Some were allegedly refused permission to board a flight from London to Madrid, while others were reportedly put back on the plane after arriving in Barcelona. "This should not be happening," the UK embassy said in a Facebook post. The Spanish Embassy in London has moved to clarify the situation, reassuring UK nationals resident in Spain that the documents at the centre of the controversy are indeed valid.