channel
peins
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 island of Britain, which contains England, Scotland and Wales, is sometimes referred to as the mainland of the UK.
The most westerly town in mainland Brittain is Lands End.
mainland Britain
Grows in Pembrokshire on the British Mainland
The Channel Tunnel.
Great Britain is an island off mainland Europe, and North of Africa and Americas.
Ireland and Britain are both islands off mainland Europe.
Lowestoft and Ardnamurchan
The Isle of Man, Britain and then mainland Europe.