To ask the Secretary of State for Justice how many times in each prison in England and Wales (a) police have been called in to the prison and (b) arrests have been made in the prison following violence, disorder or other incidents in each of the last 12 years; and what the reason for the (i) request for police attendance and (ii) arrest was in each case. (282425)

Data on police attendance at prison incidents are only recorded by the National Offender Management Service (NOMS) for incidents of concerted indiscipline and hostage taking. Data on arrests are only recorded by NOMS for drug related incidents, bomb threats, firearm related incidents and breaches of perimeter security. None of these data can be produced in the form requested without incurring disproportionate cost.