As things are changing by the day, I’ve started this thread to post OFFICIAL (French or British) government updates.
I’ll add new ones as they appear or feel free to post your own.
Here’s todays from the Gov.uk site.
Holders of UK driving licences who are resident in an EU country should exchange their UK licences for a driving licence from the EU country you are living in before 29 March 2019. For more information see driving abroad.
You should register your UK licence with your local town hall or prefecture in case it’s lost or stolen. You can change your UK licence to a French licence by completing an application form and sending supporting documents to Centre d’expertise et de ressource de titres (CERT) at Nantes. See Service.Public for instructions.