France is set to impose a compulsory 14 day quarantine on British tourists arriving in the country in the next few days.
People who arrived in the UK from France after August 15 are required to self-isolate for 14 days due to rising numbers of coronavirus cases in France.
And France's secretary of state for European Affairs Clement Beaune suggested those travelling from the UK to France could soon face similar requirements.
He told TV channel France 2: "There will be reciprocal measures so that Britons don't close the border in one direction.
"For travellers returning from the United Kingdom, there will probably be restrictive measures decided in the next few days by the Prime Minister and by the Defence Council."
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Meanwhile, Switzerland could become the next European country to be subject to quarantine measures by all four nations of the UK, according to latest figures.
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A seven-day rate of 20 Covid-19 cases per 100,000 people is the threshold above which the UK Government considers triggering quarantine conditions.
Switzerland is currently recording a seven-day rate of 20.7 cases per 100,000.