Derbyshire Constabulary was created in 1967.
South Yorkshire Police was created on 1 April 1974, following the reorganization of police forces in England and Wales under the Local Government Act 1972. It was formed by merging the Sheffield and Rotherham Constabulary, Doncaster Borough Police, and parts of the West Yorkshire Constabulary and the Derbyshire Constabulary.
Gloucestershire Constabulary was created in 1839.
Herefordshire Constabulary was created in 1857.
Suffolk Constabulary was created in 1967.
Northern Constabulary was created in 1975.
Oxfordshire Constabulary was created in 1857.
Flintshire Constabulary was created in 1856.
Lancashire Constabulary was created in 1839.
Gwynedd Constabulary was created in 1950.
Cumbria Constabulary was created in 1856.
Fife Constabulary was created in 1949.
Monmouthshire Constabulary was created in 1857.