British people are nationals of the United Kingdom, British Overseas Territories, or British Crown Dependencies.
British Overseas Territories are former British colonies. They are not independent and they rely on the UK for military and economic assistance. There are 14.
British Crown Dependencies are self-governing but they are not sovereign states. There are 3.
A British person is not necessarily a British citizen.
While anyone born or nationalized in the UK, a British Overseas Territory, or a Crown Dependency is a "British person," only nationals of the UK are "British citizens."
Only "British citizens" have the Right of Abode in the UK.