Still waiting ......
I've been in touch with Cherry Red and apparantly it was dispatched on the 14th so it seems it's been lost on the post - hopefully, they are sorting it out.
Well well well ......
The lost-in-the-post copy of The Machine Stops turned up in the post today! Postmarked 14/04/16! That's 5 months!
I've contacted Cherry Red (who were very helpful in sorting out a replacement) to see if they want it back. If they don't want me to return it, I may have a CD going spare if anyone wants a copy.
 It's going back to Cherry Red (they're reimbusing me the postage costs). Let's hope it doesn't take another
5 months to get back across from south to west London.