This is what we found on Wikipedia regarding the Skerryvore:

Skerryvore (from the Gaelic An Sgeir Mhòr meaning "The Great Skerry") is a remote island that lies off the west coast of Scotland, 11 nautical miles (20 kilometres) southwest of Tiree. Skerryvore Lighthouse is located on these rocks, built with some difficulty between 1838 and 1844 by Alan Stevenson.

At a height of 156 feet (48 metres) it is the tallest lighthouse in Scotland. The shore station was at Hynish on Tiree (which now houses the Skerryvore Lighthouse Museum); operations were later transferred to Erraid, west of Mull. The remoteness of the location led to the keepers receiving additional payments in kind. The light shone without a break from 1844 until a fire in 1954 shut down operations for five years. The lighthouse was automated in 1994.