In accordance with the severity of his crimes, Clifford will be held in one of the maximum-security Category A prisons designed for the most dangerous offenders, at least initially. “There are only a limited number of prisons that can house those who have committed crimes of such gravity it must be impossible for them to escape,” says Ian Acheson, a former prison governor and senior adviser at the Counter Extremism Project. 

"Professor Ian Acheson, a former prison governor and now senior adviser to the Counter Extremism Project, told the newspaper: “This is the first time I have seen the insider threat explicitly acknowledged by HM Prison Service, albeit you have to really hunt to find the admission."

CEP Senior Advisor Ian Acheson writes: "Thanks to a new National Audit Office report on jail capacity, we now know that prison is awful — but there’s also not enough of it. This paradox sits at the heart of the present overcrowding crisis."

CEP Senior Advisor Ian Acheson writes: "The news agenda has been quite chewy of late, so not many people will have noticed the publication of The Home Detention Curfew and Requisite and Minimum Custodial Periods (Amendment) Order 2024, slipped out last month."

CEP Senior Advisor Ian Acheson writes: "Violent extremism has the power to disfigure society and rob people of their personal security. We can address this problem but only if we equip our prisons to be places with the time, space and tools to challenge the scourge of ideologically motivated offending. And, of course, only if the supply of new recruits is stopped at source."

CEP Senior Advisor Ian Acheson interviewed: "Talk's Ian Collins is joined by former prison governor Ian Acheson to discuss the standard of living in UK prisons.

Cases of rats, broken windows, overcrowding and violence have been reported in prisons. Ian Acheson says the conditions are "inhumane" and prisons "don't have sufficient staff to help prisoners" to be rehabilitated. "