Danger
It is crucial you ensure the safety of yourself before you approach the casualty. Look around the area for anything that can be a potential risk to you, the casualty or anyone else nearby. Do not put your own life at risk.
If you do identify a potential danger you must try to make the area safe before approaching. If you are unable to make the area safe, you should not approach the casualty and instead call 999/112 for emergency assistance.