Having read Rob's comment about the book being added to the forum shop it finally gave me the kick up the backside I needed to get it ordered.
I ordered it at 11:45 on Thursday 29th December with Free delivery option between 4th and 6th January (I never pay for expedited delivery from Amazon - probably a Scottish thing) and the doorbell rang on Friday 30th December just after lunch time and it was here!
I find that Amazon's free delivery options usually arrive well before they say, but of course, that is OK if you just want something and don't mind when it arrives, but I've always been pleasantly surprised.
I guess its the "must have it for Christmas" that puts so much pressure on every part of the chain.
Having had it delivered so quickly, with work rotas, I haven't actually been able to read it yet, so that is also why I wasn't in a great hurry. Hopefully I'll get a chance shortly before heading out to work again later today.