What is the collective name for the overnight sleeper train services between London and Scotland?

Caledonian Sleeper is the collective name for overnight sleeper train services between London and Scotland, in the United Kingdom. It is one of only two sleeper services on the railway in the United Kingdom (the other being the Night Riviera between London and Penzance).

Two services depart London each night from Sunday to Friday and travel via the West Coast Main Line to Scotland. The earlier departure divides at Edinburgh into portions for Aberdeen, Fort William and Inverness. The later departure serves Edinburgh and Glasgow splitting at Carstairs. Five London-bound portions depart from these destinations each night, combining into two trains at Edinburgh and Carstairs. The Caledonian Sleeper's London terminus is London Euston.