Thanks for the comments.
The sale was surprisingly easy. Sent him a million photos and details on the car.
He came over with his mate, both of whom just love all products M Division.
Went over the car with a fine toothed comb for hours and decided the car was even better than anticipated (all the fastidious points on ownership really does pay off) and just transferred the money to my account.
Job done, no faffing. I stopped driving the car the moment the £ hit my account.
They came back the following weekend and went with the car.
He really knew his stuff, I think now buyers are after almost spotless cars. The only way mine could have been better would be to have fewer miles but there's nothing you can do about that.
Missing it already guys. I used to just tap the boot spoiler when I passed it every day as I went to and from work on my bike and now there's a huge CSL sized hole in the garage.
Won't rule out another one at some point either.
Enjoy them while you've got them, light 'em up while you can.

The cretins in power are doing all they can to stop us driving at any speed, regardless how safe it is.
The Reverend