Crown Commercial Service follows Government Procurement Service
The Crown Commercial Service (CCS) is  an executive agency and trading fund of the Cabinet Office of the UK Government. The CCS is responsible for managing the procurement of common goods and services, increasing savings for the taxpayer by centralising buying requirements, and leading on procurement policy on behalf of the government.History
CCS was originally created as the Buying Agency on 1 April 1991. On 1 April 2000, it became part of the newly established Office of Government Commerce (OGC) within HM Treasury. On 1 April 2001, the Buying Agency, the Central Computer and Telecommunications Agency, Property Advisors to the Civil Estate and other units from the Treasury merged to form OGCbuying.solutions. The agency's name was changed to just Buying Solutions in April 2009. On 15 June 2010, it moved, along with its parent agency the OGC, to become part of the Efficiency and Reform Group within the Cabinet Office. Its name was changed to the Government Procurement Service (GPS) in July 2011. In January 2014 the GPS merged with the procurement management from government departments to form the Crown Commercial Service (CCS).