Adam, I went to Nottingham BCA in the week a few weeks ago. I have heard that 'top cars' is where the trade try and dispose of cars to unsuspecting private buyers which they can't shift/not upto scratch... Last few weeks I've started to feel like Arthur Daley. From what I've seen go through the auctions - auction price + fees (looking at £900 on a ~ £20k car if you aren't a trader) pretty much = private sale price after a bit of negociation. I'm now best mates with the Crewe Audi Service dept as I've checked out the history of so many cars!
Interestingly, there are two 08 plate QPs going through BCA next week - both low miles (~14k) - probably out of my budget - I might start a thread in case anyone is interested.
Dicky, it looks like you're on the hunt for another GS - any luck?