One other point Lew. KY 9374 was a four seater. The chassis number you suggest is a two seater. I can't find my original documentation so I don't have the chassis number. Best MIKEB
Strange that it was originally sold by University Motors in London to somebody that lived in London, with a Bradford, Yorkshire registration number! All the KY numbers are available at the Wakefield records office, so an enquiry there may be interesting!