Hi Simon
Are you wedded to the idea of buying outright? I had never done a PCP but last October I took delivery of a brand new 2 litre diesel Q5 sportback with the black pack.
I did it through drivethedeal.com and had about £9k off list. (There may be other brokers)
My logic was I have a brand new car on a 4 year PCP and when the time comes I can choose to pay off the final payment, return the car or part ex it for another one - and bear in mind there is a new Q5 due out in 2025 so that might influence my eventual decision.
Hope that helps but please shout if I can help further