The county furthest to the west of the UK mainland is Cornwall, provided the Scilly Islands is not included.
Lizard Point, on the Lizard Peninsular in Cornwall.
The furthest south point in Britain is Lizard Point in Cornwall, England. It is situated on the Lizard Peninsula and marks the southernmost tip of the UK mainland.
It's the furthest point west.
Saint Simons Island
The furthest point of North-West within the continent of Spain.
Cornwall extends furthest south.
The westernmost part of the Roman Empire was Portugal.
West Cornwall Railway was created in 1844.
West Cornwall Railway ended in 1947.
Cornwall is located in the South West England.
If you count Iceland as a part of Europe, it is furthest west. Otherwise, the furthest west European country is Ireland. The furthest west country in mainland Europe is Portugal.