What I find puzzling is this. Where is the duty of care being addressed towards riders, spectators and residents during the races. Incidents dealt with by the police are largely about drunks or other people trying to break the law by crossing the road etc. How does this affect Health and Safety if they have to deal with an armed seige? terrorism? a few scary bikers don't seem a problem, and policemen should, like everyone else keep themselves out of the dangerous areas. Marshalls are the only ones expected to go there.
As far as I know the only policement killed covering races was killed at a Manx and I understand he was sitting in a prohibited area, where he should not have been.
I have always found most of the police supporting us as marshalls to be excellent, by the way (with the odd exception!)