Comment by codeulike

In the UK there are automatic defibrilators all over the place for the public to use. The devices can measure the patients heart rythms and decide when to activate, meanwhile an automated voice tells the rescuer what to do.

Map to find public AEDs in the UK: https://www.heartsafe.org.uk/aed-locations

e.g. in small villages the red phoneboxes that used to have payphones now often contain defibrilators