Riding past Sandown Park racecourse yesterday afternoon, there was loads of plod around (on bikes and in cars sitting in pretty-much every sideroad between Esher High Street and the "Silly Isles" roundabout). Anyone know what it was about? I saw no obvious signs of mobile speed traps, and they were so visible that nobody sober would have been speeding excessively through there. I was followed for half a mile, while filtering through the traffic, by a police motorcyclist, which was rather unnerving. I wanted him to overtake so I could pick up a few tips, but it didn't happen.