Great Britain. Ordnance Survey of England. Great Britain. Geological Survey of England and Wales. Sheet 11 drift. Geological Survey of Great Britain. North Decimal Degree 55.166700. South Decimal Degree 55.0167. East Decimal Degree -2.9333. West Decimal Degree -3.3667. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights.Transverse Mercator projection. National grid system.