An English health trust has appealed directly to the head of MI5 to ensure that a former RUC Special Branch agent receives proper treatment for illnesses he sustained as a result of infiltrating the IRA.
Raymond Gilmour, a Londonderry man who worked undercover for the authorities and gave evidence in a supergrass trial in 1982, has given the Belfast Telegraph and BBC South East copies of the letter from his consultant to MI5 director general Andrew Parker.
Mr Gilmour lives in the south of England under a new identity. His exact whereabouts and his identity remain a secret.
The consultant explained that Mr Gilmour had been diagnosed with post traumatic stress disorder (PTSD), anxiety and panic attacks, adjustment disorder and borderline personality disorder, all made worse by excessive drinking and anxiety about his true identity being exposed. The letter is dated October 4.
Mr Gilmour's partner, referred to as Sue, said "the letter from the consultant has both Ray's original name of Gilmour and his new name on the heading".
Mr Gilmour said he was worried that the IRA would identify him through health service records.
The letter reflects this fear and confirms that his treatment has been interrupted. It added "any involvement with (Mr Gilmour) will be subject to risks of identity exposure and undermine the issue of confidentiality".
The consultant said that, after a meeting with the trust's head of legal services, it had been decided to write to the "people he used to work for (MI5) to discharge him to their care and responsibility and to guarantee his safety and ensure any issues relating to his confidentiality are strictly adhered to".
Sue said MI5 paid for private treatment until 2007, and Mr Gilmour had responded well to it. After the treatment was withdrawn he became paranoid, started drinking heavily and believed he was being followed.
"It had a bad effect on my children," she said. "When we were out driving he would want to turn off, thinking somebody was following him."
Asked about this, Mr Gilmour insisted that he was really being followed.
"Paranoia is my best friend after the work I have done," he said.
He added: "I'm not asking for the world, I am asking for treatment for ailments that are clearly related to my work in combating terrorism. As I get older these issues don't go away; they get wider and they get worse."
Sue stated: "Christmas is a particularly bad time because he misses his family. The slightest thing can set him off, even something on the TV about Northern Ireland. He just gets worked up and goes on about the past."
She added: "The health service stopped treating him over a year ago but he needs to be able to see somebody when he is having a panic attack.
"If you become ill as a result of your work, the employer has a duty of care. In this case the duty lies with the security services – he has these mental health problems as a result of what he did for the Government."
Last night Mr Gilmour and Sue were both interviewed by BBC South East. Although fearful of exposure, they hope that the publicity will encourage the authorities to authorise secure medical treatment.