Progressing Prisoners Protesting Innocence are a NGO lobby group whose mission is to highlight the plight of prisoners maintaining innocence and to make recommendations to the relevant authorities to help those prisoners progress through the prison system.
Adam Mac is another inmate of Wakefield prison who has a website entitled Blogging Behind Bars here
Innocent featured Dave's case in their news section in September 2012 and linked to here
MoJUK very kindly linked to this site in August 2012