A new N gauge model of the BR Mk.1 second class sleeping car. These cars were designated SLSTP, an operating abreviation fo SLeeper Second class Twin berth with Pantry (a small compartment for the car attendant with facilities to supply a small range of refreshments, eg. tea and coffee, to the passengers. These were the usual type of sleeping car provided for passengers booking second class tickets, with two passengers normally accomodated in twin-berth compartments.