Conurbation in northern England
Teesside is a conurbation around the River Tees in the north of England. The name was initially used as a county borough in the North Riding of Yorkshire. It is common to see Teesside incorrectly spelt as "Teeside", with a single 's'. The term was initially for a smaller area but has came to be used for larger built up area, with more settlements that are also on the side of the Tees.