the tyne improvement commission docks and piers police was a police force which policed the property of the tyne improvement commission on the river tyne in northumberland, england. its officers were sworn as special constables under the harbour, docks and piers clauses act 1847 and had full police powers on commission property. the force was disbanded on 30 november 1949, although its members remained in the commission's employment as unsworn security guards. policing on commission property was taken over by the river tyne police.