The Chief Executive of the Scottish Prison Service, currently Colin McConnell, is responsible for its administration and reports to the Cabinet Secretary for Justice, who is responsible for the Scottish Prison Service within the Scottish Government.
Employing over 4,000 staff, the SPS has its headquarters in Calton House, located in South Gyle, Edinburgh.
In November 2003 SPS signed a contract on behalf of Scottish Ministers for a "Prisoner Escort and Court Custody Service". This contract with Reliance Custodial Services provides for all prisoner escorting between police cells, court, prisons and hospitals as well as covering escorts from prison such as funerals, hospital appointments and community placements. In 2012, SPS contracted this service out to G4S.