The governor of a maximum-security prison, HMP Blackwood, is reviewing reports on rising levels of inmate violence.

Officer A argues: 'The main issue is the prison environment itself. The cells are cramped, there is almost no privacy, and we’ve had to cut back on exercise time and social visits due to budget cuts. It's an absolute pressure cooker.'

Officer B disagrees: 'No, the problem is who we are locking up. More than half of our new arrivals this year have active gang affiliations, histories of violent crime, and high levels of impulsivity. They bring their street culture and conflicts with them through the gates.'