The Prison Service policy is to enable those prisoners who wish, to practise their religion. The Prison Service Performance Standard on Religion (No. 51) and the Prison Service Order on Religion (4550) sets out the more detailed policy and includes specific information on the provision necessary for the practice of the main world faiths, including Islam. Copies of Prison Service orders are kept in the House Library and both Prison Service orders and performance standards are also published on the Prison Service website (www.hmprisons.gov.uk). The requested information on costs is not available.