People who drive in France with British licences may exchange them online via the website of ANTS, the French national licences agency.
Please visit https://permisdeconduire.ants.gouv.fr/ and click ‘demander un permis de conduire’.
You will either need to create an account on the ANTS site. – or access your dashboard if you already have an account which gives you to access several public service.
This new online process is only for people with ‘European’ licences, which includes British ones during the transition period for Brexit.