An inmate mounting a protest at Strangeways prison has daubed 'FREE IPPZ' across the roof of the jail, in an apparent dig at a now abolished court sanction titled Imprisonment for Public Protection sentences (IPP).
The prisoner has also been heard repeatedly shouting 'free IPPs'. So what are IPPs, why were they scrapped and why does it remain an issue today? READ MORE: LIVE: Prisoner spotted on roof of Strangeways prison - latest updates In 2005, the then Home Secretary David Blunkett introduced Imprisonment for Public Protection sentences (IPP).
The public, press and even some judges - confronted with this new tool - struggled to understand them at first. Those who got them were handed minimum terms, often only of a few years, after which they had to convince the Parole Board they were safe to be released.
If they weren't deemed safe, they remained behind bars. The problem was IPP prisoners weren't given access to courses so they could prove they were rehabilitated.