The government are set to announce the “Green List” of countries where Brits will be allowed to travel to from 17 May.
By the end of June Brits could be allowed to take holidays in France, Greece and Spain.
Boris Johnson said on Monday that he expects there will be some new “openings” on 17 May and warned the UK must be “cautious and sensible.”
Many countries are set to allow Brits to holiday without the need of a Covid test due to the UKs successful vaccine rollout.
Gibraltar’s Chief Minister, Fabian Picardo said the Rock offers a “great British staycation in the Mediterranean,” once travel resumes.
But Professor Adam Finn, a member of the Government’s Joint Committee on Vaccination and Immunisation, said unregulated international travel “can be very dangerous indeed.”
He said there are steps which can be taken to minimise the risk of further infection.
Professor Finn told Sky News, “We certainly got our hands very comprehensively burned in March 2020 when very large numbers of people returned from holidays in Europe with the virus and set the pandemic going in the UK at a very fast rate.
“So, we’ve learned our lesson that international travel in an unregulated way can be very dangerous indeed.
“I think while travel is inevitably going to start happening, we really do need to do everything we can to minimise the risks associated with that: think about the places where people are going to travel; to make sure that people have been immunised before they travel; and if necessary, implement quarantine and control measures to stop the virus being imported and spreading about.”
The Government is expected to announce on Friday that the ban on overseas leisure travel for people in England will be lifted on May 17.
Johnson has been urged to keep foreign travel restrictions in place to prevent new variants entering the UK by some MPs.
The All-Party Parliamentary Group (APPG) on coronavirus have warned that airports are a “breeding ground for infection” which could lead to “further lockdowns” if new variants enter the UK.
Lib Dem MP Layla Moran, chair of the APPG, told Sky News, “We wouldn’t want to have for the sake of one summer holiday us go backwards and have a further wave and a further lockdown.”
Moran said that by allowing international travel to resume could “scupper our progress at the very last minute.”
The Lib Dem MP added, “Let’s be really cautious and rather than encouraging people to be going away, our view is that the government should be discouraging people from taking their holiday this year.
“The government should be the ones telling people maybe not this year, just wait a few more precious months and then when we’ve got enough people vaccinated, not just here but around the world, we will get back to normal.
“It just might not be this summer.”