HM Prison Isis

HM Prison Isis is a Category C male Young Offenders Institution, located in the Thamesmead area of the Royal Borough of Greenwich, in south-east London, England. Isis Prison is operated by Her Majesty's Prison Service, and is situated next to Belmarsh Prison and Thameside Prison.

In May 2009, the Ministry of Justice awarded Interserve a £110 million contract to design and construct a new prison called Isis on underused land within the perimeter wall of Belmarsh Prison. The new prison was built to Category B security standards. In August 2009, the construction site of the new prison was evacuated after contractors discovered a suspected World War II bomb. Isis Prison is located on the site of the former Royal Arsenal, and the suspected bomb was found to be an empty shell casing. Interserve handed over the completed Isis Prison in April 2010, with the prison becoming operational soon after.

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