French Polynesia is an Overseas Collective (Collectivité d’Outre-Mer) of France. If your passport describes you as a British Citizen you will not need a visa to enter French Polynesia. Other British passport holders should check the current entry requirements on the website of the French Ministry of Foreign Affairs, and if necessary confirm with the nearest French Diplomatic mission.
Your passport should be valid for the proposed duration of your stay. No additional period of validity beyond this is required.
The French authorities have confirmed they will accept British passports extended by 12 months by British Embassies and Consulates under additional measures put in place in mid-2014.
Yellow Fever vaccination is required for travellers who are arriving from, or have transited through, countries with risk of yellow fever transmission.
British nationals who wish to work in French Polynesia should make enquiries, prior to departure, at the nearest French Consulate.