Sorry Grunty, paramedics and nurses can only make an assessment, a doctor is needed to pronounce it in the same way as a doctor is the only person who can sign a death certififcate. This from the British Medical Journal
"The scene is familiar. Ambulance staff respond to an emergency telephone call: "I think my husband has died." They find a pulseless, apnoeic corpse, in their view clearly beyond help. His distressed widow requires professional support and care. But there are no definitive signs of death. Thus, because ambulance personnel cannot pronounce "life extinct" (they are not, after all, doctors), the charade must be acted out of instituting full resuscitation measures while removing the victim "from public gaze."