Each Concentrate revision guide is packed with essential information, key cases, revision tips, exam Q&As, and more. Concentrates show you what to expect in a law exam, what examiners are looking for, and how to achieve extra marks. This chapter discusses the executive branch of government. The executive consists of the reigning monarch who is legally the head of state, the Prime Minister, Cabinet, unanimity of advice and collective cabinet responsibility; Secretaries of State, Ministers of the Crown, departments of state, non-departmental public bodies, the civil service, the Civil Service Commission, parliamentary accountability, the Ministerial Code, the seven principles of public life, legal accountability, devolved administrative organizations in Scotland, Wales, Northern Ireland, and London, local authorities, the police, and the armed forces, the effect of the Localism Act 2011, the Scotland Acts 1998, 2012, 2014, and 2016, the Cities and Devolution Act 2016, and the Wales Act 2017. This chapter also discusses the relevant provisions of the European Union (Withdrawal) Act 2018 and the Northern Ireland (Executive Formation and Exercise of Functions) Act 2018.