You should probably talk to Manchester City Council. They are as obsessed with Health and Safety as any other 'modern organisation' (aka: bunch of power-mad, useless tossers). Recently they invited many thousands of football fans to invade the city centre and allowed them to drink all day - and then were a bit surprised when it all when 'pear-shaped' and the fans wrecked the place.

I would love to have seen the risk assessment written prior to this event!

There was probably a clause in it somewhere which said, "on no account must this risk assessment be allowed to prevent the city from raising lots of lovely revenue as a result of this invasion of drunken yobs".