Where is the most northerly mainline railway station in Great Britain?

Thurso railway station is a railway station serving the town of Thurso, Highland and port of Scrabster (for Northlink Ferries to Stromness), in the Highland council area, in the north of Scotland. The station is on the Far North Line, within the former county of Caithness. It is the northernmost station on the National Rail network of Great Britain. It is 154 miles (248 km) north of Inverness.

The station opened on 28 July 1874.

In the past trains from Inverness would split up at Georgemas Junction, with one portion going to Wick, and the other to Thurso. Prior to the introduction of multiple unit trains by British Rail, a locomotive would be based at Georgemas Junction to take the Thurso portion to and from the junction.