He served the first part of his sentence in Glasgow's fearsome Barlinnie prison.

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The court also heard that Ms Watt visited Mr Parker in Barlinnie prison on 23 December 2011, when he gave her information that he wanted passed to the police or his lawyer.

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It is also home to Scotland's largest prison, Barlinnie, which is located in Riddrie.

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Derek McGill, governor of Barlinnie, said overcrowding at the prison led to "regime difficulties".

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He urged the Scottish Prison Service to review the long-term future of Barlinnie and implement its redevelopment "as soon as possible".

BBC: Prison overcrowding 'needs to be fixed', MacAskill says