As far back as 2010 the government admitted that the situation was 'not defensible' and David Blunkett the Home Secretary responsible for introducing the scheme is on record as saying he very much regrets the 'injustices' that have arisen as a result.
Unlike Chris Grayling, his successor Michael Gove also recognised there was a serious problem and was in the process of trying to find a remedy before he was unceremoniously sacked from the MoJ by the new Prime Minister Theresa May.
For this substantial group of prisoners, who have no idea when they might be released and with most way over their tariff date, despair often leads to self-harm as reported here by the BBC:-
'Self-harming rise' among prisoners on indefinite sentences
The rate of self-harm by inmates serving indefinite prison sentences in England and Wales has risen by almost 50% in four years, figures suggest. Last year, there were more than 2,500 acts of self-harm by prisoners serving imprisonment for public protection, or IPP, sentences, at a higher rate than among those serving fixed sentences. The Prison Reform Trust said it showed IPP prisoners were in "despair".
The Ministry of Justice said it was urgently looking at IPP offenders. IPP sentences were scrapped in 2012, but thousands of inmates are still waiting to be released. According to new Ministry of Justice statistics, which were compiled by the Prison Reform Trust, there were 2,537 incidents of self-harm among the population of 4,100 IPP prisoners last year. The figures suggest rates of self-harm among IPP prisoners have gone up significantly every year for the last four years.
'No finish line'
They showed there were 550 incidents of self-harm per 1,000 IPP prisoners last year. That compares with 324 incidents per 1,000 prisoners on determinate sentences and 200 per 1,000 prisoners serving life sentences. Of those still serving IPPs, 3,300 have served more than the minimum sentence they were given, while 400 have served at least five times the minimum sentence they received.
At long last it looks as if with Nick Hardwick's arrival at the helm of the Parole Board and at the behest of Michael Gove, there is at last a plan as to how to deal with the issue. This from the BBC website:-
Parole Board chief urges indefinite jail release change
Prisoners held indefinitely after serving their minimum term or tariff should not have to prove it is "safe" to release them, new Parole Board chairman Nick Hardwick has said.
Various factors make it "incredibly difficult" for some inmates on Imprisonment for Public Protection sentences to find such proof, he said. He wants new criteria for freeing IPP prisoners in England and Wales. The Ministry of Justice said the suggestion had been "taken on board".
IPP sentences were introduced by Labour in 2005 as a way of stopping the release of dangerous prisoners. But courts were banned from imposing any more IPP sentences in 2012 amid concerns they were being used to hold people for periods which their original offence did not warrant.
In March, 4,133 IPP prisoners continued to be detained, the majority of whom had been convicted of "violence against the person", sexual offences or robbery.
'Festering in prison'
The Parole Board can approve a prisoner's release after the minimum term - the "punishment" part of their sentence - but only if it is satisfied it is not necessary to hold the inmate in the interests of public protection. It means the prisoner has to prove they do not present a risk and can be safely managed in the community. In March, about 80% of IPP prisoners - 3,347 - had already served their minimum term but were still locked up.
In his first interview since taking up his post in March, Prof Hardwick told the BBC that procedural delays, problems accessing offending behaviour courses and finding suitable accommodation made it "incredibly difficult" for some IPP prisoners to prove that it was safe for them to be let out.
"Some of them are stuck, festering, in prison long after the punishment part of the sentence," he said. Ministry of Justice figures show more than 500 IPP prisoners given tariffs of less than two years were still in prison five or more years later. "Once it gets to that point, they stop making progress and they start going backwards," said Prof Hardwick. "So this is, I think, a blot on the justice system and I'm very keen we can do something about it."
He said Liz Truss, the new justice secretary, should consider activating Section 128 of the Legal Aid Sentencing and Punishment of Offenders Act 2012. The clause allows the justice secretary to alter the test which the Parole Board has to apply when releasing prisoners. Both houses of Parliament would have to agree to the change, but fresh legislation would not be required.
"There are legislative options that will enable us to change the risk test so it's more about 'is there proof that they're dangerous rather than proof that they're safe?' and there are some other measures that can be taken... to try to cut into that group," Prof Hardwick said.
The former Chief Inspector of Prisons said there were three categories of IPP inmate who would benefit most: Those on very short tariffs but still in custody; prisoners held beyond the maximum sentence for the offence they had committed; and offenders who were too frail or elderly to pose a danger.
The Parole Board is also trying to cut the backlog of prisoners awaiting decisions on their release, by hiring more parole panel members and dealing with cases more efficiently. Prof Hardwick said it was "crazy" to be paying out compensation to inmates held in custody because their cases were delayed due to a lack of resources.
In 2015-16, there were 463 damages claims lodged, five times the number the previous year, with £554,000 paid out in compensation, compared to £144,000 the year before. "It's not a good use of taxpayers' money," Prof Hardwick said. "It would be much better to put the money into ensuring that the system is working efficiently so that people get dealt with fairly and get out when they're supposed to and when the courts intended."
The Ministry of Justice said: "The chair of the Parole Board has made a number of recommendations to improve the parole system and reduce the backlog of IPP prisoners. "Work is ongoing within the department to address these issues and his recommendations have been taken on board".
As is now routine in the airbrushing of probation out of the picture, no mention of the vital role probation has in all this, both in preparing reports and release plans for Parole Board hearings, and in undertaking supervision under the terms of any Parole Licence. I so wish we had an effective, authoritative champion that could put our case......