Six passenger orbiter portion of a two-stage vehicle proposed by David Ashford of Bristol Spaceplanes Ltd. in the 1980`s / 1990's. It would serve as the prototype for the even more ambitious Spacebus.

The Bristol Spaceplanes Spacecab was a Two Stage To Orbit (TSTO) Manned Spaceplane, with an airbreathing supersonic / hypersonic, delta winged first stage and a second stage powered by a liquid fuelled rocket engine. The Concorde-sized spacecraft would deliver a payload of 6 persons to low Earth orbit.