Millions of tourists may have to change their holiday plans as Greece and Spain could replace France on the ‘amber plus’ travel list, according to reports.

Number 10 has confirmed a review into the ‘traffic light’ system for international travel will be released before Saturday.

However, it is still not clear how much time people will be given before any of the changes announced come into force.

Earlier this month Downing Street announced that France would be exempt from a new system allowing fully vaccinated people returning from amber list countries to skip self-isolation.

It is now looking likely that the country will be taken off the amber plus list, if Spain or Greece are added, around 5.9 million UK travellers may have to quarantine.

As well as having to isolate at home for 10 days, people also have to take a pre-departure test test three days before returning from amber countries.

They also have to do PCR tests on or before day two of their arrival. Fully vaccinated people can stop quarantining if they provide a negative test on day five.

But even then, everyone returning from these destinations still has to take another test on the eighth day.

Ministers are expected to approve changes to the list today, as Boris Johnson becomes increasingly concerned that the EU is further ahead in welcoming international travellers, according to the Times.

Economists estimate that the UK is losing as much as £639million every day due to current curbs on tourism.

But concerns over some countries still remain, as Denmark removed Greece from its list of safe countries last week amid rising infections in the Mediterranean country.

As of Sunday, the 14 day case rate in Greece per 100,000 inhabitants was 167, compared to 63 in France.

In response, Greece is only allowing fully vaccinated people inside bars and restaurants, following the lead of Portugal.

Concerns over Spain are centered around the Beta variant first recorded in South Africa.

The strain is thought to be more resistant to the AstraZeneca vaccine and was one of the main reasons France was moved to the amber plus list.

A Whitehall source told the Daily Mail: ‘The situation in Spain is beginning to feel a lot like the build-up to the decision on France.

‘The Department of Health are getting very jumpy about the number of Beta cases in parts of the country. We’re not talking about the main tourist hotspots, but that might not make any difference – it didn’t with France.’

Another source said France ‘should never have been left out in the first place’, adding that ministers ‘just panicked’ at the time.

Germany and Austria look set to move to the safest travel green list next week, but sources have played down reports that Italy and Canada will join them.

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