Just to let you all know, mine just arrived! It doesn't appear to be damaged or anything either. I can confirm it was delivered by Royal Mail. Hopefully they'll start trickling through to everyone.
I did notice, however, it was shipped from Germany, I guess that why it was delayed! But they shouldn't say "pre-order to get on release date" if they don't take that into account.
Still disgusted about the whole situation, and the complete LACK of replies from customer services.
Won't order from .mu again, unfortunately. I'll save my self £10 and get it on time with Amazon.
Good luck everyone.