Click on the British Embassy's "Living in France Guide" below for more information on Passports and travel:
https://www.gov.uk/guidance/living-in-france#passports-and-travel
Check that your passport is ready for travel via the link below, before you book your trip:
https://www.gov.uk/check-a-passport-travel-europe
You can apply for or renew your British passport from France here:
https://www.gov.uk/overseas-passports