My apologies.
I'd only clicked on the 'NEW' icon and didn't scroll up so hadn't seen your reply..
It is just about what you say, although it's not quite the de Suto Stevens which has featured elsewhere here (see the link).
It looks slightly different and was, I believe, simply the Stevens GT. A very nice looking car in my opinion.
A very obscure car indeed and well done finding that one. Incidentally his main claim to fame was the Reliant Kitten-based Stevens Cipher
rather than Davrians or Darrians. He is now Professor Tony Stevens and is involved in electrically-powered vehicles but unfortunately failed to reply to my several emails to him asking for information about this particular car.
http://www.autopuzzles.com/forum/index.php?topic=17143.msg171133#msg171133Another, rather unclear, picture: