Stand-off at HMP Lindholme in wake of warning about prisoners 'easily' obtaining drugs. : Prison officers at a “drug-ridden” jail initially refused to take up their posts the morning after one of their number was choked unconscious during an attack by an inmate. Staff at HMP Lindholme, in South Yorkshire, demanded restrictions on prisoners’ movements until safety measures could put in place in the wake of the incident on Thursday night. The Prison Officers’ Association (POA) said the jail's governor initially refused their request, demanding they “carried on as normal” and fully unlock cells.