The Channel Islands include Alderney, Guernsey, Jersey and Sark & Herm. There are other, very small islands in the group, but these are not normally open to visitors. See individual entries for more information.
Most visits to the UK are trouble-free but you should be aware of the global risk of indiscriminate international terrorist attacks, which could be against civilian targets, including places frequented by foreigners. This advice is correct at time of publishing. As the situation can change rapidly, visitors are advised to contact the following organisations for the latest travel advice: