Three people have been arrested after a diabetic grandmother died following controversial Chinese “slap treatment” at a country retreat.

Danielle Carr-Gomm was found dead hours after taking part in the so-called “Self-Healing Workshop” at Cleeve House country hotel in Seend, Wiltshire.

The treatment is supposed to eradicate illness-causing toxins from the body by hard, repeated slapping, fasting and painful stretching on a bench, a technique called Paida-Lajin.