My chain broke towards the end of lap one and I had to run to the finish where I fixed it. Then it broke again half way round lap 3 and I decided to call it a day, but to be honest it wasn't a total disappointment. The course was great (really great), but the weather was pretty atrocious and it was a bit of a relief to be able to stop.
If any of the organisers are reading this though, you need some more people on registration. The start of the 4 hour was delayed by about 40 minutes and we were all hanging around getting cold.
Also, despite the fact that the advertising said water was available I had to ask about 4 people where it was before finally getting the bikewash guy to disconnect his kit so I could fill up my bottles before the start.
Only other items on my wish list would be a better tannoy (that people could actually hear) and a free bikewash. I think it's a bit much to be charged £2 for about 1 minute's use of a jetwash.