The definition can vary, depending on which constabulary you had in mind. Some are regular, civil police forces where the officers are called constables instead of officers. Some are paramilitary police organizations. Some are made up of soldiers trained for policing duties.
Monmouthshire Constabulary ended in 1967.
Monmouthshire Constabulary was created in 1857.
Glamorgan Constabulary was created in 1841.
Glamorgan Constabulary ended in 1969.
Herefordshire Constabulary was created in 1857.
Herefordshire Constabulary ended in 1967.
Suffolk Constabulary was created in 1967.
Northern Constabulary was created in 1975.
Hertfordshire Constabulary was created in 1841.
Oxfordshire Constabulary was created in 1857.
Oxfordshire Constabulary ended in 1968.
Buckinghamshire Constabulary was created in 1857.