Hi Pete,
Thanks for the feedback; I'm just back from holidays, so apologies for the delayed reply. I did indeed buy an extended warranty for the car. I'm happy with the condition it's in, but I know from experience (Before the Scirocco I had a 2004 730i) how expensive some repairs can be.
Now I've used the car a wee bit more, I've come to terms with some of the contrasts between a lightweight, turbocharged, FWD car, and the powerful, heavier RWD beast that the 550i is! And I'm very impressed with the new one!