I was looking at this myself, lat night....

Most likely China Model Productions. This is where GSP get its planes from.....

Ok, I've just found where I saw it. Flair has it, they are a UK site and they do the CMP airplanes..... eg the same Spitfire that GSP has..

Not conclusive proof, but there you go.... http://www.ss16.dial.pipex.com/Furth...rames_page.htm