I've seen these covers / doors at every VW show I've been to.. Normally priced at about £20. If your going to Malvern there should be some there? I'm after the cover / door and the surrounding cut so I can make mine like yours. I've also looked at the type 25 hatch / cut..Much bigger.. Not sure if that could be fitted?
Unfortunately I'm away when Busfest is on. Not sure i'm going to get to many shows for the rest of the year. If anyone does happen to see a good condition one at a show please message me and I'll sort out paying you