From 8th June there's been a mandatory 14 day self-isolation period for people entering the UK. From 10th July, travellers from some countries are exempted from the self-isolation via a travel-corridor. If more countries are added to the list of exemptions then the date for each country will be later than the 10th July.
If a traveller entered the UK from a country that is not on the exempt list and that country is added to the exempt list prior to the end of the 14 day self-isolation period does the self-isolation period end early?
For example, if an individual entered the UK from France on the 5th July, should they remain in isolation for 14 days or does the isolation end on the 10th when France is added to the list of exempt countries?