The Mk3 sleeper cars were built in 1981 to 1984 by BREL Derby Litchurch Lane Works and a total of 208 vehicles were constructed. There are two types of Mk3 sleeper cars: Sleeper Either class (SLE), which has 13 compartments (13 to 26 beds), and Sleeper Either class with Pantry (SLEP), which has 12 compartments (12 to 24 beds), plus a compartment used for an attendant.

This coach has been repainted in full Caledonian Sleeper livery as carried on CAF Mk5 carriages that were introduced in 2019.

This reskin requires the EWS Class 67 Loco Add-On from Steam, available from: https://store.steampowered.com/app/208369