If anyone was surprised at the idea that a single prison could accidentally release two people within a matter of days, then a brief glimpse at an inspection report for HMP Wandsworth from last year would quickly explain things.
Despite a high-profile escape from the south London jail only months earlier, conditions were so chaotic at the time of the inspection that most staff could not reliably say where all prisoners were during the day, Charlie Taylor, the chief inspector of prisons, reported with obvious near disbelief.