This four-wheeled coach is a representation  of the many which served on the Southern Railway (SR) having been  inherited from its predecessors such as the London & South West  Railway (LSWR) and the South Eastern and Chatham Railway (SECR).

Small coaches such as this four-wheeled coach proved especially good at  branch line work where their small size enabled the traversing of tight  radius curves, whilst lower passenger numbers meant their small size was more acceptable and enabled trains to be hauled by smaller engines.

This SR coach is modelled as having step boards to enable access at stations with low platforms and electric lighting.