Vickers proposed improving the Valentine tank in 1943. It would be patterned after the Valentine as much as possible and have a bigger 3 man turret.
To speed up production the road wheels were made the same size. Vickers gave the design to Birmingham Carriage & Wagon who then passed it on to Ruston & Hornby. The pilot was completed in mid-1944.
One model had a GMC engine with an AEC gearbox and the other a Rolls-Royce Meteor engine and gearbox. The Meteorite engine could take diesel or petrol.
The turret was 2 casts bolted together. The front of the hull was also made of castings.
Only reached prototype stage as the war was close to ending.