This is all i can find on BBC -
Following Mr Johnson's speech, No 10 confirmed a reciprocal deal with the government in Paris meant restrictions would not apply to passengers from France.
In a joint statement, the UK and French governments said they had agreed to "work together in taking forward appropriate border measures", adding: "This co-operation is particularly necessary for the management of our common border."
The statement added: "No quarantine measures would apply to travellers coming from France at this stage; any measures on either side would be taken in a concerted and reciprocal manner.
"A working group between the two governments will be set up to ensure this consultation throughout the coming weeks."
However, the announcement has raised questions about whether international travellers could avoid 14-days in isolation by passing through France on their way to the UK.
Number 10 says further details of the new rules will be set out before they come into force.