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
Council of Civil Service Unions v Minister for the Civil Service Minister for the Civil Service. Lord Diplock said the following: Lord Roskill said the following. The courts have traditionally been unwilling to subject prerogative powers to judicial review. Judges were only willing to state whether powers existed or not, not whether they had been used appropriately. They therefore applied only the first of the Wednesbury tests; whether the use was illegal. Constitutional scholars such as William Blackstone would have considered this appropriate. The GCHQ case, therefore, was highly important; it held that the application of judicial review would be dependent on the nature of the government's powers, not their source.