Charities have criticised an episode of the Miracle Hour show, broadcast on Faith World TV on 4 January, during which a caller with diabetes was told he was "set free" from the disease.

"It is particularly dangerous and puts his life at risk," said African Health Policy Network head Francis Kaikumba.

UK World Evangelical Trust, which produces the show, said: "We are now reviewing our new programmes to make sure our standards meet good practice."

BBC London's Nick Beake spoke to head of African Health Policy Network Francis Kaikumba, Action Plus Deliverance Centre's Pastor Fred Annin, and London solicitors Michael Simkins LLP's Eleanor Steyn.