Now according to what I read, your GP will refer you to one such in your area, reminding you that of course to take the 'scientific route' for your condition too.
Perhaps they don't fund it all, but it is all there under NHS 'by association'.
However having said that someone I know who had a pethidine addiction was offered an NHS funded 'hands on healing' therapy (can't remember the exact name for it) and acupuncture.
They went along with no expectations and consequently no results.