Hi Mike,
I really don,t think it is a Dutton, I would have to agree with DB6 that this is a one off, and I think it would be a UK car being RHD.
It is very well done though.
I think the stock Caterham (and oft copied)rectangular box rear lights look like something you can pick up in a "build your own trailer" parts store.Ugliest parts on the car in my opinion.
I always liked Morgans ...
how about this one
http://cgi.ebay.com/ebaymotors/2003-Morgan-Plus-8-35th-Anniversary-Edition_W0QQitemZ300299836007QQihZ020QQcategoryZ6472QQssPageNameZWDVWQQrdZ1QQcmdZViewItem