Alderney is one of the Channel Islands, part of the Bailiwick of Guernsey which is a British Crown Dependency.
In 1847, a 2 mile (3.2km) standard (1435mm) gauge railway was constructed by the British Admiralty to convey stone from Mannez Quarry to Braye for use in the construction of a breakwater and coastal defences. Since then it has been used for maintenance of those defences.
In 1980, the government owned line was leased to provide a tourist passenger operation. Services are now operated by a diesel shunter locomotive hauling former London Underground passenger carriages. There is also a 7¼in (184mm) gauge diesel hauled miniature railway about ¼ mile (0.4km) in length at Mannez Quarry station. Both railways operate most weekends during the summer.