Charlotte Caldwell pleads with health secretary Matt Hancock to ‘intervene and stop this torturous ordeal’. The mother of a 15-year-old boy who can suffer from hundreds of seizures a day has called on the health secretary Matt Hancock to intervene and allow him a prescription for medical cannabis on the NHS. Charlotte Caldwell’s son Billy has severe epilepsy and has been accessing specialist cannabis oil from a private doctor through a temporary arrangement which runs…