2009 structural changes to local government in England

On 1 April 2009 structural changes to local government in England took place which reformed the local government of seven non-metropolitan counties: Bedfordshire, Cheshire, Cornwall, County Durham, Shropshire, Northumberland, and Wiltshire. In each case the government of the county was changed from a two-tier to a unitary system, with Bedfordshire and Cheshire being divided into two new unitary authorities.

Source: Wikipedia — 2009 structural changes to local government in England (CC BY-SA 4.0)