The government could introduce coronavirus 'vaccine passports' to allow for safe international travel.
A minister has said that the UK will work with other countries to “help facilitate” immunity passports if they are required.
It comes after The Times reported that Brits wanting to holiday in Greece this summer will be asked to provide documentation to prove they have been vaccinated.
Foreign Office minister James Cleverly said it would be up to the individual countries where holidaymakers are arriving to decide on their own border arrangements.
Mr Cleverly told the BBC it was “not an uncommon practice” for countries to require documents on inoculations.
“The decisions that individual countries make about their own incoming arrangements is obviously up to them," he said.
“We are incredibly proud of the speed and the breadth of our vaccination rollout and of course, I think the whole world hopes, that the vaccination programme will be a way of getting back to normality.”
Asked if the UK would help in providing certificates, he said: “It is often the case that the entry requirements for countries are for vaccines or inoculations, and that is not an uncommon practice.
“We will work with international partners to help facilitate their border arrangements and their immigration arrangements.”
Downing Street has said the government has no “current plans” for vaccine passports, after The Times reported that officials were working on a certification system.
A No 10 spokesman said: “There are still no current plans to roll out vaccine passports. Going on holiday is currently illegal.
“We have always been clear that we will keep the situation under review. We are not going to speculate on this matter any further.”
Greece could open its borders to British holidaymakers who can provide proof of vaccination as early as May, The Times reported.
Currently, while there are general restrictions on movement within the UK as part of the third national lockdown British citizens are permitted to fly into Greece.
Travellers must give evidence of a negative result for Covid that has been carried out in the 72-hour period before arriving in the country.
