I actually heard about this less than a week ago.
I've since found a few local osteopaths that practice the technique and I've researched it a bit and found that there's been quite a lot of success using it.
There was a trial about 5 years ago that was quite a success but didn't go anywhere as well, via the NHS. But it's not surprising that nothing more came of it.
I'm arranging to give it a go and see how it is. Apparently about 80% of it is self-managed (isn't all CF/ME treatment though?) so I may well buy Dr Perrin's book too.
Anybody tried this technique?