East Yorks - ACU Centre/Region

that part of Stockton Borough situated south of the River Tees, Middlesbrough Borough, Redcar & Cleveland Borough, that part of North Yorkshire situated East of the railway line from Northallerton to the boundary of York (including York), and east of the main York – Barlby – Howden to the East Yorkshire boundary and the area of East Yorkshire situated North of the Rivers Humber and Ouse.