People sunbathe and others swim in the Teign estuary in Shaldon, Devon, England, Wednesday July 21, 2021. (Photo: AP)

The UK government has issued the latest tweaks to its international COVID-19 travel policies in a boost to overseas summer holidays.

Seven countries have been added to its so-called 'green list', meaning no quarantine is required on arrival. However, travel sector leaders and opposition politicians say there is still too much confusion and uncertainty.

From 4 a.m. on Sunday, fully vaccinated travellers arriving into the UK from France – many of them on Eurostar trains coming into the terminal at London's St Pancras International station – will no longer have to quarantine at home for 10 days.

That's because France has been taken off the British government's so-called amber-plus list for international travel.