Overview
The Cabinet Secretary is the most senior civil servant in the United Kingdom and is based in the Cabinet Office. The person in this role acts as the senior policy adviser to the Prime Minister and Cabinet, and as the Secretary to the Cabinet is responsible to all ministers for the efficient running of government. The role is currently occupied by Simon Case.
Origin
The position of Cabinet Secretary was created in 1916 for Sir Maurice Hankey, when the existing secretariat of the Committee of Imperial Defence, headed by Hankey, became secretariat to a newly organised War Cabinet.
Responsibilities
Civil Service
Since 1981 (except for a period 2011–2014), the position of cabinet secretary has been combined with the role of Head of the Home Civil Service. The cabinet secretary used to also hold the position of the permanent secretary of the Cabinet Office, but this has been passed to the chief executive of the civil service. The first means that the cabinet secretary is responsible for all the civil servants of the various departments within government (except the Foreign Office), chairing the Permanent Secretaries Management Group (PSMG) which is the principal governing body of the civil service. The second means that the cabinet secretary is responsible for leading the government department that provides administrative support to the prime minister and Cabinet. The post is appointed by the prime minister with the advice of the out-going cabinet secretary and the First Civil Service Commissioner.
From Wikipedia (CC BY-SA 4.0).