This is what I heard at the miscarriages day and the amount of groups claiming to help potential miscarriages fair no better, you only have to look at JENGbA who had the a case worker claiming to be a miscarriage when he clearly isn't.
I now understand the amount of work involved to try and prove a miscarriage and I think when you're a genuine miscarriage case and not having been in this situation before, I can imagine if they appear to be the light at the end of the tunnel, people readily accept their help in good faith , not knowing it's going to be akin to chasing your tail (if you're Padgate!).
I think I'd probably get a solicitor in the field of the crime the accused was in and work with them to get as much evidence as possible together.
Perhaps Bristol Innocence haven't see the various websites that things have been posted on. I only know Ipswich police have because they told me when I spoke to them. I'd have thought they would however, check Simon's website but perhaps they don't.