Thanks for your feedback.
By the time I left this morning, before all your comments, to go and make my choice. I had decided on the petrol. But whilst stuck in a big jam on the A3 decided to phone ahead and check that the car was still available...............it wasn't ( it was up for 8k btw) so I headed in the opposite direction and am now the proud owner of a 08 Diesel that I was told was silver but on inspection has a slight gold sheen. Couple of scratches and stuff but seems fine. Last service at 35k. Paid 8499 ( they had it in the sale) but here is the best bit. I got £1200 for my jazz SE. It needed the windscreen fixed (chip in the black trim) new brakes all round AND the bearings were shot I wasn't even sure if I was going to get there as it had got so loud. They never drove it just made sure the engine turned

I was delighted,my local garage had said about £500-£700 tops. So all in all a very happy chappy.
But I must learn to slow down and stop grinning.
I can't believe the pull from just about any ware