Jam,
Try Jill Judd at Cover Up 01798 813389.
JJ has just made some half doors for my 7, £70 inc P&P, and I'm very pleased with them. They have simply been made out of tonneau material and a 'slot' was made in the top for me to insert a length of plastic conduit to add extra support.
They don't have the 'elbow bulge' like the Caterham ones but they are considerably cheaper. I believe Caterham charge £90 plus VAT per half door!
Chris Alston
Se7ening - it's all miles and smile.gifsmile.gifsmile.gif
1800 Supersprint - Loud and Proud teeth.gif ...well it only sounds fast officer blush.gif