LOL, at the local tip! I followed the wife there, sh*t wasn't going in my car
From what I read they all do it, I'll speak to the dealer to see if their demo does it as they have one in. Honestly it does sound a bit **** for a £50k+ hyperhatch!
Its hard to tell exactly where it originates, sounds like the exhaust but then it stops as you only get seconds to investigate. Can't be a "faulty" part if they are all doing it, I am surprised they have all left the factory like it though. Mine doesn't always do it that long as its garaged so doesn't stay on cold start for as long.
I know what it will be .. a "characteristic" of the car