The good thing about Whilton is they have big grids and that some of the best UK drivers are there (if no S1 round). The bad thing about Whilton is that the grids also contain inexperienced drivers and a fair few bad and dangerous drivers.
So when you have mixed grids (as opposed to qualifying heats), there is a good chance that you will come across one of the bad drivers and be put on the grass. If you happen to be drawn in a 'bad' pack, then you are with them through all the heats.
The other bad thing about Whilton is the marshalling inconsistencies. Perhaps with big grids its hard to see who does what and when, but when the course clerk listens to marshall x because he's been there some time, but refuses to listen to marshall y because he's new, its a little annoying!
So, Whilton in August was a difficult meeting. Riley was smashed off the track at least once in every heat. To add insult to injury, the only incident that was called in was one where Riley bumped another driver off the track (admittedly probably too roughly). So after 3 heats of hell, Riley was given a 5 place penalty for the final and started 22nd.
At one point Riley was back up to 8th, taken off again he finished 15th. An amazing drive, but a very frustrating weekend.