Well, one could start, perhaps, with a suicide-prevention hotline. The National Suicide Prevention Lifeline, in the U.S., encourages people to call with any problem. Your therapist or pdoc may also know of some. It is, no doubt, a bit of a fishing expedition. If you were in the U.S. I'd know what to do. But I'm not familiar with the U.K. I do know some people though who might be able to get one started.