The good Samaritan laws are there to protect firstaiders http://www.express.co.uk/news/uk/557888 ... being-sued So if you see someone in trouble, get stuck in and try to help if you can without harming yourself (too badly) without fear of being sued. The bike safe guys said to me, if you find a motorcyclists on the road, not breathing, its better to get his helmet off and risk a neck injury than have him choke on his tounge/vomit. Infact its nearly always the right thing to do to take the helmet off (contary to popular belief) Also when giving CPR, don't worry if you break the persons ribs - they will heal! Better to have broken ribs and be alive than dead with perfect ribs. Knew someone would inform me I personally always try to offer my help (what little it is)