I also have a heavy duty external specialised cover for sale just the same as the one previously sold on the forum.
It is a little scuffed (nothing serious) on the arches where I have brushed past the car in the garage. It was covered to keep the dust off during house renovation works. Otherwise it is in good condition. I can email pictures if required.
Anyway, collection from the WD5 area and �75 for cash.
Please send me a PM if interested.