With the acquisition of Saunders Roe, Westland took over the P.531 project, which became the prototype for the Scout (originally called Sprite) and the Wasp.
Coa compra de Saunders Roe, Westland fíxose co control do proxecto P.531, que se converteu no prototipo do Scout (orixinalmente chamado Sprite) e do Wasp.