Teesside the four independent unitary authority boroughs of Hartlepool, Stockton, Middlesbrough and Redcar and Cleveland (a renamed Langbaurgh). At this time they were returned to the counties of North Yorkshire and County Durham for ceremonial purposes, with Stockton-on-Tees becoming the only district in England split between two ceremonial counties. In 1998 the neighbouring Borough of Darlington also became an independent unitary authority and this along with the four former Cleveland boroughs form the sub-region of the Tees Valley which is used for statistical purposes and governmental organisation. The name Tees Valley is increasingly promoted for economic and cultural connections, though Teesside,
Trolleybuses in Teesside of the former Teesside system trolleybuses are now preserved, one of them at Black Country Living Museum, Dudley, West Midlands, one at the Kirkleatham Old Hall Museum, and the third one near the Trolleybus Museum at Sandtoft, Lincolnshire. From 1912 Bolckow Vaughan was the main mover behind the North Ormesby, South Bank, Normanby and Grangetown Railless Traction Co., which built a depot at Cargo Fleet, took power (until 1955) from the Bolckow Vaughan's (later Dorman Long) South Bank steel works, erected the first pole at Normanby in July 1915 and had the entire system ready 8 months later, but not