Well done George,
sorry I didn't get to see you, I only planned to go Saturday evening and I didn't see anyone looking like your picture to say hello to! Being such a small venue, we most probably passed each other several times. I was with two other runners who had kindly given me a lift.
I've never done this course before and think it was quite a toughy, very undulating, so you should get under the 2 hrs at Windsor.
I had a good first half then basically hung on until the finish. Still not running well for me, but running that's the main thing!