Unipower Invader 4x4 chassis. Four wheel drive, 16 ton G.V.W. Can also be operated as 4x2 on hard roads by disengaging front axle drive. Perkins V8-510 compression ignition 8-cylinder engine.

Show chassis being supplied to Carmichael of Worcester for equipping as an airfield fire crash tender for use by the Ceylonese Airport Authority.

1970 Commercial Motor Show, Earls Court. (Peter Esposito via Chris Stanley)