Caledonian Sleeper is the collective name for overnight sleeper train services between London and Scotland, in the United Kingdom. Trains run nightly (except Saturday night) with two departures from London and split to serve five final destination routes within Scotland.
The earlier departure serves Aberdeen, Fort William and Inverness. The later departure serves Edinburgh Waverley and Glasgow Central. All routes have several intermediate stops. As of 2015 the services are part of the Caledonian Sleeper franchise operated by the train operating company Serco Caledonian Sleepers Limited (SCSL).