Popular Spanish holiday islands are in danger of being moved onto the amber list only a fortnight after being approved for quarantine-free travel, according to reports.
Those travelling to amber listed countries, such as mainland Spain, have to self-isolate for 10 days on their return to England.
However, as of July 19 the requirement to quarantine will be scrapped for the fully vaccinated and those aged under 18.
The Sun, which first reported the alleged travel change, quoted a source saying: “It’s all still up for discussion, but the figures aren’t great which is why it was on the watch list in the first place.”
The Department for Transport said there was “nothing to say at the moment” on changes to the Balearic islands’ travel status.
Aside from countries potentially coming off the green list, some could be going the other way, according to an analyst.
Italy, Germany and Poland are among the destinations most likely to be added to the Government’s green travel list, Robert Boyle, former director of strategy at British Airways’ parent company IAG, has predicted.
He wrote on his website www.gridpoint.consulting that “strong candidates” from Europe to be added to the quarantine-free list also included Austria, Bulgaria, Latvia, Lithuania, Slovakia and Switzerland.
People arriving in the UK from green list destinations are not required to self-isolate.
There is a case for Hong Kong and Taiwan to be shifted onto the green list as well, he added, while Canada was also looking a decent bet, although the North American country does not currently allow visitors from the UK.
The UK is battling its own summer spike in cases, with a further 36,660 lab-confirmed Covid-19 cases reported as of 9am on Tuesday.
Government data also recorded a further 50 people had died within 28 days of testing positive for coronavirus as of Tuesday – the highest day-on-day increase since April 9 – taking the country’s total to 128,481.
The Government’s travel lists are expected to be updated on Thursday, although reports have suggested it could come 24 hours earlier, with Transport Secretary Grant Shapps due to face the media on Wednesday morning.
Travel expert Mr Boyle also predicted Indonesia and Sierra Leone could be moved from the amber list to the red list, while Bahrain could go in the opposite direction because of “case rates plummeting”.
People arriving in the UK from a red-list location must spend 11 nights at a quarantine hotel, at a cost of £1,750 for solo travellers.
It comes as a couple were barred from making a trip to Malta due to having been given an Indian-made batch of the Oxford/AstraZeneca vaccine, according to The Daily Telegraph.
Boris Johnson has recently looked to play down concerns that up to five million Britons could be barred from taking holidays in the European Union because their vaccinations are not recognised by its passport scheme.
The problem centres on doses made by the Serum Institute of India being known as Covishield.
Despite it being the same as other AstraZeneca vaccines, it has not been authorised by Europe’s regulator and is therefore not recognised by the EU.