I have held a full clean British Licence for 50 years, no driving offences , I have read all the links from other members of this site, and my insurance and the licence authority have told me that I must now have a French licence. I have asked them why when I am British born and bread, and a member of the European community. They say that my UK licence is not written in French and not acceptable in a French court of Law if needed, that is why you can no longer translate your own licence?
I pointed out that the licence codes were universal, the DVLA in the UK told me that since the change in the law back in January 2014 my licence was not valid after 1 year living in France. My Australian friend has a British Passport, he was told the same. My American friend, I understand that she is not an EU member, even though she now lives here, she had to have a French licence, and when she now goes back to Texas, she has to use an International licence to drive in the USA. I have lots of evidence showing the problems I have had.
I finally wrote back to Marseilles, the licence authority I come under. in December 2014, telling them that I did not know what else they wanted from me, it was so easy for me to change my husbands licence when he was 70. I even took all my paperwork to Marseilles waited all morning to speak to someone and confirm that they were happy with my dossier, they said yes, but I must send it in by post, I did as I was advised, and it was rejected after being told it was OK. So I contacted the DVLA yet again, they sent me a mail which I translated, for the authorities in Marseilles, and sent to them, and finally they accepted my application and gave me a French licence.
As I have already said, you should check with your insurance company here, and ask them, your insurance is very important, MAAF insist on a French licence. Incidentally, if you are using a UK address to apply for a British licence and you do not live there, you can be find £2,000 and receive a prison sentence.
Once you tell the licence authority that you live in France, you will not be able to change any information on your British Licence, I was going to apply for an international licence, but I was not able to, because I had told the DVLA that I now live in France. Your UK Licence is frozen but valid, until the French authorities confirm that they have granted you a French licence. You need evidence to show that you are in the process of applying for a French licence, that will be enough for the police if you are stopped.