This is a really great article. Look forward to more in this vein.
Have you read up at all on the history of private security employed by the US state? Seems like some other aspect of shameful history the tories are trying to imitate. https://en.wikipedia.org/wiki/Pinkerton_(detective_agency)
One tiny thing though, if you’ll excuse my utter pedantry coming out; I do have a slight bug-bear with sentences starting with -ing verbs: “allegations […] mount. Putting the allegations of staff abuse and falsification of documents at Medway secure training centre (STC) in a more global perspective of the company’s record.”