Question to the Ministry of Justice:

To ask the Secretary of State for Justice, how many successful prosecutions for assaults on prison officers by prisoners on resulted in a sentence of (a) of less than one month, (b) between one and three months, (c) between three and six months and (d) more than 12 months in each year since 2010.

Detailed information on how many successful prosecutions for assaults on prison officers by prisoners that resulted in a sentence of (a) of less than one month, (b) between one and three months, (c) between three and six months and (d) more than 12 months since 2010 is held on court record but to be able to identify these cases we would have to access individual court records which would be of disproportionate cost.