All defibrillators for public access are very easy to use. The machine gives clear spoken instructions and you don’t need training to use one.
If you come across someone who isn’t breathing, or is breathing erratically, the most important thing to do is to call 999 straightaway.
If there’s a public access defibrillator nearby, the operator will inform you of its location and give you the code to open the cabinet. The defibrillator will then give you instructions to follow and won’t deliver a shock unless it’s needed.