The family of a man who died after being given too much diamorphine are taking legal action against the NHS and the doctor who was responsible for his death.

David Gray, 70, died after being injected with ten times the recommended dose of the painkiller by Dr Daniel Ubani in February 2008.

Dr Ubani was on his first shift in the UK, working for the out of hours service Take Care Now. He is now under investigation by the Care Quality Commission and is facing a possible manslaughter charge.

Mr Gray’s family is pursuing civil legal action against Dr Ubani, NHS Cambridgeshire and Take Care Now, claiming that the medic did not have suitable training and that the victim would still be alive had he been treated by someone with British medical training or a student nurse.

NHS Cambridgeshire has insisted Mr Gray’s death was an isolated incident.

Clinical negligence occurs when a professional in the health service provides care that is deemed to be below standard and this causes physical injury, death or distress.

Anyone affected should seek legal action as they may be eligible for compensation.