County Borough of Teesside councils in 1918, and was a pioneer operator of electric trolleybuses. The three undertakings adopted a common livery of turquoise and cream in 1967 in preparation for their amalgamation. On 1 April 1968 the combined fleet became Teesside Municipal Transport. Teesside initially operated a mixed fleet of trolleybuses and omnibuses, but on 4 April 1971 trolleybus operation ended. A formal closure ceremony was held two weeks later. Before 1968 the Teesside area was served by three police forces: Middlesbrough Borough Police, Durham Constabulary and the North Riding of Yorkshire Constabulary. It was originally envisaged that the new county borough would
Teesside Refinery On site there is a canteen, an active sports and social club and People SPIRIT team who organise a variety of activities. When owned by ConocoPhillips they continually funded technical apprenticeship schemes in the area, and were directly involved in local primary and secondary school education. Initiatives ranged from donating computers and funding school exchange programmes, to providing engineers for maths and science days. The Teesside terminal is accredited (certified) to ISO 14001, the international environmental management system standard, which it has held continuously since October 1998. The site is on the fringe of the estuary mudflats of Seal Sands,