The Caledonian Sleeper is a sleeper train service.
Operated as part of the ScotRail franchise.
Serco took over the franchise on 1 April 2015.
| Current franchises|
Chiltern | East Anglia (Stansted Express) | East Midlands | Essex Thameside | Greater Western | Integrated Kent | InterCity East Coast | InterCity West Coast | Merseyrail | New Cross Country | Northern | ScotRail | South Western (Island Line) | Thameslink, Southern and Great Northern | TransPennine | Wales and Borders | West Midlands