My thanks go to Alan Wilson (New Zealand) for sending in these photos of his GNAT. Alan writes;
... I have just recived my latest Play thing a (GNAT Mark 1 Made by A J Cameron Lewis & Co Ltd , Christchurch , NZ ) Chassis No2089 , Engin No14363b. About 1965-1970 , Engine is a Kawasaki , KF150G-SX ,10.5 hp ...
Will send a photo when the Gnat is cleaned up