MADRID – Blame COVID-19 travel restrictions or Brexit but whatever the cause, some British citizens trying to return to their homes in Spain this weekend have been barred from boarding flights.Airlines are refusing documents that before Brexit had been valid proof of the Britons' status as residents in Spain.Their ordeal comes amid heightened travel restrictions due to a coronavirus variant that has been blamed for faster contagion in the U.K.
and highlights the bureaucratic complexities resulting from Britain's departure from the 27-nation European Union.Both Spanish and British authorities said Sunday that the green-colored certificate of EU citizenship with a foreign national identification number issued by Spain is still valid for.