HM Prison Erlestoke is a Category C men's prison, located to the east of the village of Erlestoke in Wiltshire, England. Erlestoke is operated by Her Majesty's Prison Service, and is the only prison in Wiltshire.Erlestoke HouseThe prison is built around Erlestoke House, a country house built by Joshua Smith, Member of Parliament for Devizes, between 1780 and 1810. During the Second World War the house was used as a training school for the Special Operations Executive.A single-storey lodge from the early 19th century stands at the roadside entrance to the grounds of the house. The lodge, together with gate piers and wrought iron railings of similar date, is Grade II listed.Prison historyErlestoke House was seriously damaged by a fire in 1950 and was then converted into a prison, with many additional buildings constructed.The site was first used by the Prison Commission in 1960 as a detention centre, became a young prisoners' centre in 1977, and a Category C adult male training prison in 1988.In 1998, it was reported that thieves had broken into Erlestoke Prison and stolen £3000 worth of gardening tools from a shed. Two years later, two inmates from Erlestoke used a makeshift ladder in a daylight jailbreak. The two escapees then stole a car from a nearby farm, but then crashed it, and were subsequently recaptured by the police.