Thanks for the replies chaps.
Hopefully the dealer is just playing it safe by quoting 5 months (flippin' hope he is anyway!!!)
I agree that a manufacturer as big as VW, and in the wider spectrum VAG shouldn't have build times as long as this. What is strange is that I could've had an A3 184 within about 10 weeks. Same group, admittedly different manufacture so not the best comparison.
As mine is a company car I'm just waiting for the dealer to confirm estimated bw & order no etc. I hope I don't get inferior customer service due to being company buyer and not private?!