The first aircraft from the renamed company was the Spartan Arrow a two-seat biplane of which 15 were built. The next design was a three-seat open-cockpit biplane the Spartan Three Seater. The company ceased to build aircraft in 1935.
In January 1931 Flight magazine revealed that Whitehall Securities had acquired a substantial holding in Saunders Roe Ltd. and arising out of this investment Spartan was effectively merged into Saunders Roe. Spartan Aircraft's final product was the Spartan Cruiser a three-engined light airliner developed from the Saro-Percival Mailplane.