Prime Minister of the United Kingdom the convention developed that the Prime Minister should always sit in the lower house. As leader of the House of Commons, the Prime Minister's authority was further enhanced by the Parliament Act of 1911 which marginalised the influence of the House of Lords in the law-making process. The Prime Minister is "ex officio" also First Lord of the Treasury and Minister for the Civil Service. Certain privileges, such as residency of 10 Downing Street, are accorded to Prime Ministers by virtue of their position as First Lord of the Treasury. The status of the position as Prime Minister means that
Queen's Commendation for Valuable Service in the Air ribbons or, in civil airline uniform, on the panel of the left breast pocket. If a recipient has no medals, the badge is worn in the position in which a single ribbon would be worn. The reverse is plain, except for the attachment pin and, in some cases, a registration number. Although renamed the Queen's Commendation for Valuable Service in the Air in 1952, this did not lead to a change of design. All recipients also received a certificate, signed by the appropriate government minister. Approximately 3,000 Commendations for Valuable Service in the Air were awarded, including to service personnel