London Guardian 
June 15, 2010
Doctors have agreed to breach their duty of medical confidentiality to patients who own guns if they fear they have become so seriously mentally ill they may use their weapons on themselves or the public, the Guardian has learned.
GPs say they will tell the police if a gun owner’s deteriorating health makes him or her a serious danger to the public, without the patient giving consent to their medical privacy being breached.
In order for doctors to know which patients have guns, the medical records of patients holding or applying for firearms licences would be “flagged”.
The agreement comes after months of talks between the Association of Chief Police Officers and the British Medical Association.