Is this an emergency?
Call 999, ask for the ambulance service and follow their instructions.
If you believe a person has suffered a catastrophic bleed, immediately ring either 999 or 112 and ask for the ambulance service. They will advise you on what action to take and either inform you where your nearest bleed kit is located or ask if you have a bleed kit. The operator will remain on the line and ask you a series of questions which should only take you a few moments and advise you on what steps to take to assist in emergency.