Avon County Council ended in 1996.
Avon County Council was created in 1974.
Northumberland County Council ended in 2009.
Berkshire County Council ended in 1998.
Merseyside County Council ended in 1986.
Cheshire County Council ended in 2009.
Bedfordshire County Council ended in 2009.
Cambridgeshire County Council ended in 1965.
West Yorkshire County Council ended in 1986.
Greater Manchester County Council ended in 1986.
West Midlands County Council ended in 1986.
It used to be in Avon but it is now a City Council in its own right, however some parts are in South Gloucestershire.
Bristol is its own county, often known as City of Bristol. It was formerly in the county of Avon, but that no longer exists, despite almost every online form suggesting it does!