The UK has only one land border, and that is on the island of Ireland. Since 1994 the Channel Tunnel beneath the English Channel links the UK with France. The United Kingdom shares maritime borders with Belgium, Denmark, France, Germany, the Netherlands, Norway, and the Faroe Islands (Denmark).

The United Kingdom is geographically close to several countries, primarily due to its location in Northwestern Europe and its complex political geography involving Crown Dependencies and Overseas Territories.

Here’s a breakdown of the closest countries and territories:

1. Closest Sovereign Nations (by sea)

These are the countries with which the UK shares a maritime border or that are directly across the sea.

• Ireland: The closest sovereign nation. It shares a land border with Northern Ireland, which is part of the UK. The shortest sea crossing from Great Britain (e.g., from Stranraer, Scotland) to Ireland is about 20 miles (32 km).
• France: The closest continental European neighbor. The famous English Channel separates the two, with the narrowest point being the Strait of Dover, just 21 miles (34 km) between Dover and Calais.
• Belgium: Lies to the east of the English Channel. The distance from the UK coast (e.g., Ramsgate) to the Belgian coast is approximately 70 miles (112 km).
• The Netherlands: Further north across the North Sea. The distance from the east coast of England (e.g., Norfolk) to the Dutch coast is roughly 100-120 miles (160-190 km).
• Norway: Shares a significant maritime boundary with the UK in the North Sea. The closest point (Shetland Islands to Norway) is about 190 miles (305 km).
• Denmark: Also across the North Sea, with the distance from Northern Scotland to Denmark being approximately 400 miles (645 km).

2. Crown Dependencies (