Map of the Yorkshire and the Humber region showing the administrative districts.
Equirectangular map projection on WGS 84 datum, with N/S stretched 170%
Geographic limits:

West: 2.65W
East: 0.25E
North: 54.65N
South: 53.2N
Ordnance Survey OpenData:

County boundaries (from Boundary-Line product)
Coastline data for Great Britain (from Boundary-Line product)
Nilfanion, created using Ordnance Survey data