channel
The body of water that separates Britain from mainland Europe is the English Channel. It is a narrow stretch of water that connects the Atlantic Ocean to the North Sea. The channel is approximately 21 miles wide at its narrowest point.
The Channel Tunnel is both underground and underwater. The train system runs under the English Channel and connects Great Britain to France.
atlantic
Britain is an island and Belgium is on the European mainland.
The most westerly town in mainland Brittain is Lands End.
The island of Britain, which contains England, Scotland and Wales, is sometimes referred to as the mainland of the UK.
Grows in Pembrokshire on the British Mainland
mainland Britain
Ireland and Britain are both islands off mainland Europe.
Great Britain is an island off mainland Europe, and North of Africa and Americas.
The Channel Tunnel.
Lowestoft and Ardnamurchan