 Buckinghamshire County Council and the non-metropolitan districts of Aylesbury Vale, Chiltern, South Bucks, and Wycombe in Buckinghamshire were replaced by a single unitary authority known as Buckinghamshire Council on 1 April 2020.The existing unitary authority of Milton Keynes was not affected; from 1 April 2020, therefore, the ceremonial county of Buckinghamshire has been composed of two unitary authorities.In March 2018, an independent report commissioned by the Secretary of State for Housing, Communities and Local Government, proposed structural changes to local government in Northamptonshire.