UK TV use in France!
Fear not, of course your TV will work in France - it is not a backward country.
Even your Freeview will work, but of course it will be French Freeview (called TNT), but you will have to use a terrestrial antenna which will have to be up to current digital standards.
If you want to view UK programmes you can install a Sky dish and take out a second hand Sky digibox with Free-to-view card from Sky.
Good luck.