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,
Teesside Airport railway station South Junction; it was opened by British Rail on 3 October 1971. There are two platforms, each long enough for a four-coach train. The airport changed its name to Durham Tees Valley Airport in 2004, however, the station's name was not updated. In 2007, the train operating company Northern erected new signs reading "Teesside Airport", replacing previous signs which had used a hyphen in "Tees-side". National Rail now also lists the station as "Teesside Airport". In December 2017 it was announced by Durham Tees Valley Airport (DTVA) that the footbridge and eastbound platform would be closed to save DTVA having