Ms Murphy, a room supervisor who lives in Greenfields in Loughton, faces similar health and safety charges.

BBC: Rhiya Malin death: Trial of Eton Manor workers starts

Jason Taft, 41, of Greenfields Farm, Stoke-on-Trent, Thomas Richard Lesley, 55, and his son Thomas Lesley, 34, both from Belfast, and Andrew Boal, 32, from Ballygowan, Newtonards, County Down, were remanded in custody.

BBC: Staffordshire explosions: Seven men appear in court

Jason Taft, 41, of Greenfields Farm, Stoke-on-Trent, Thomas Richard Lesley, 55, his son Thomas Lesley, 34, both from Belfast, and Andrew Boal, 32, from Ballygowan, Newtonards, County Down, were previously charged with conspiracy to blackmail and have been remanded in custody.

BBC: Staffordshire explosions: Seven face further charges