Map of the South East England region showing the parliamentary constituencies in 2011.
Equirectangular map projection on WGS 84 datum, with N/S stretched 160%
Geographic limits:

West: 2.0W
East: 1.5E
North: 52.25N
South: 50.5N
Ordnance Survey OpenData:

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