I guess HANS is a good idea, I'm still sceptical as to whether it should be mandatory as has been mentioned. I don't own one, but my helmet has HANS posts. I borrow a Scroth HANS from a friend who does differing events to me. I don't wear it at rallysprint, I weigh up the potential danger against the hassle and comfort and decided not to. I wouldn't bother at RAC either as there's really nothing to hit and the speed is relatively low. Gravel and tarmac rallying I would certainly reccommend it though.