Some, such as the Virgin Islands, are owned by the United States. Others are part of Holland, or part of the United Kingdom. Some islands are independent.
Northern Ireland, which is on the island of Ireland.
The United Kingdom, Germany, France, the Kingdom of the Netherlands, and several others more.
If you are asking about the United Kingdom. England, Scotland and Wales are on the island of Great Britain and Northern Ireland is on the island of Ireland.
Many Caribbean islands are independent countries, while others remain politically linked to countries such as the United Kingdom, France, the Netherlands, and the United States. These linked territories are referred to as Overseas Territories, Departments, or Territories, with varying levels of self-governance.
Guernsey and Jersey are remnants of the Duchy of Normandy and are not considered part of the United Kingdom. All others are British Crown Dependencies
Lake Windermere and about 1000 others.
Scotland
The Cairngorms and others.
Japan is the first. Others are the United States, the United Kingdom, and Canada.
Buckingham Palace plus about 200 others.
Most people in the United Kingdom work in banking or trading. Others work in the service industry, software developers and IT positions.