HMP Full Sutton near York, which holds some of the country's most difficult and dangerous criminals, are "preoccupied with health and drug issues",

The findings were revealed in an annual report by the Independent Monitoring Board which monitors day-to-day life in the UK's prisons.The report revealed "healthcare services have had another successful year" at the Category A jail, with virtually no complaints to the board.It said: "In many cases therefore, the standard of healthcare at Full Sutton is probably above that which an individual could expect in the community."The governor and his staff were praised for running a well-managed prison, which caters for 600 prisoners - all of whom are serving long sentences in high-security conditions.The report also revealed that a prisoner smashed up his cell after magistrates gave him a lenient sentence for assaulting a prison officer."He received a lenient concurrent sentence which did not act as a deterrent and actually encouraged him in his subsequent destructive action," the report concluded.The report also said there had been an "unsatisfactory and probably unreasonable" delay in investigating a foiled escape plot by terrorist prisoners last March, because the matter was handed over to Special Branch at a time when there were "other serious terrorist incidents in the public domain".Seven prisoners were sent to the segregation unit with loss of privileges but there was no clear-cut evidence and nobody was charged with any offence.