Thanks for your support guys, I appreciate it.

Am feeling very disillusioned with the whole thing atm.
Dealer has confirmed I can have a hire courtesy car if mine is sold, but that's hardly the point! I had a sale fall through on my Mk6 a few weeks ago (for reasons on the buyer's side totally unrelated to the car), and so the plan was/is to put it up for sale when I return from my hols in approx 3 weeks. If I decide to stick with the order regardless of when it might come - sooner, or later, what I will be saying to VWUK (likely to fall on deaf ears), is that they should compensate me the amount that my car depreciates from the 1st September until such time it is sold (either privately, or to a dealer).
My dealer has been apologetic but not very proactive until now. I have constantly asked for the dealer for updates, and the only reason I have not pushed it until now, is, a) I didn't need it till 1st Sept and earlier in the process that was on track, and b) there was a known? (on forums) supply issue with the Pretoria Wheels, so I expected some delay due to that, and c) the last est BW - BW35 was still just about an acceptable wait. But now cars with Pretorias are being built and delivered and my dealer has confirmed he has had them coming through too, and it's not BW35, or 36, 37.... Dealer is at a loss as to why there is such a delay but I have insisted that he must now keep the pressure on VWUK (as will I) for some answers and hopefully an acceptable resolution. Any bets it's some minute admin glitch that is the reason.
Just build the damn car!!!
@jpo, you're probably right, placing a fresh order could see it being built quicker than BW4. Mad!