I have a fitted cover for a Series 2/3/4 I'll check it's weatherproof, assume it is, although as I have a garage I've never actually used it! I'll have a look tonight and post some pics for you.
As I'm selling my S4 it might go with the car if the purchaser asks for it on the basis they are keeping the car outside / want a cover, otherwise I'll pass it on to someone else who actually needs it.
