A.
If you have a paper licence or your driving licence was issued in Gibraltas, Guernsey, Jersey or the Isle of Man, from 1 January 2021 you may need to apply for the relevant International Driving Permit. You need a GB sticker for your own car when driving in the EU, including France.
Advice on driving in the EU can be found at:
https://www.gov.uk/guidance/driving-in-the-eu-from-1-January-2021