Map of the South West England region showing the administrative districts.
Equirectangular map projection on WGS 84 datum, with N/S stretched 160%
Geographic limits:

West: 6.5W
East: 1.4W
North: 52.2N
South: 49.7N
Ordnance Survey OpenData:

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