On 1st April 2009 Durham County Council became a unitary authority. The councils of the City of Durham, Easington, Sedgefield, Teesdale, Wear Valley, Derwentside, and Chester-le-Street were abolished.

All new FOI requests for information held by the former Chester-le-Street District Council should be made to Durham County Council http://www.whatdotheyknow.com/body/durham_county_council

Nid yw'r awdurdod hwn yn bodoli bellach, felly ni allwch wneud cais iddo.