Brits may be allowed to visit Spain this summer even if there is no EU agreement on vaccine passports, according to reports.
The country's tourism minister Fernando Valdés said Spain is considering a 'green corridor' for vaccinated Britons.
He said the government is in talks with the UK in a bid to make travel between the two countries easier in time for the summer.
Mr Valdés added that Spain is hoping to find an agreement with the EU so the country can start welcoming back tourists as soon as possible.
Speaking to Bloomberg TV, he said: "Right now we have discussions with our colleagues in the UK.
"For us the British market is our main market. But obviously since we are a member of the European Union, the solutions have first to be part of the discussions with the EU.
"And obviously if that cannot be reached, we will be thinking of other corridors like green corridors with third countries that can help us restart tourism flows."
The news comes as Professor Jonathan Van Tam said this week summer holidays overseas will depend on European countries catching up with the UK on their vaccination programmes.
England's Deputy Chief Medical Officer said many European countries are behind us on vaccine rollout - and the possibility of overseas travel will depend on what other countries will "say and do".
He told a No 10 news briefing: "We are still in a zone of great uncertainty about what the virus will do next.
"On top of that, many of the vaccination programmes in Europe - which is a place where we frequently go on holiday abroad - are running behind ours.
"Clearly, whether we can go on holiday abroad to places such as Europe depends on what other countries will say and do in terms of foreign tourism.
"There has to be great uncertainty at the moment."