The Wallis and Futuna Islands are a French Overseas Territory. There is no formal British diplomatic or consular representation. See Consular assistance
Most visits to Wallis and Futuna Islands are trouble-free. Crime levels are low.
Although there’s no recent history of terrorism in Wallis and Futuna, attacks can’t be ruled out. See Terrorism
If you’re abroad and you need emergency help from the UK government, contact the nearest British embassy, consulate or high commission.
Take out comprehensive travel and medical insurance before you travel.