Geological Survey of Great Britain. Great Britain. Geological Survey of England and Wales. Sheet 299 drift. Great Britain. Ordnance Survey of England. North Decimal Degree 51.183300. South Decimal Degree 51.0000. East Decimal Degree -1.2500. West Decimal Degree -1.6667. In upper left margin: Ordnance Survey of Great Britain. Relief shown by contour interval and spot heights. Transverse Mercator projection. National grid system. "Original geological survey on the one-inch scale by H. W. Bristow, F.R.S. Published on Sheet 11, 12, 14, & 15 Old Series 1856-60. Resurveyed, on the six-inch scale, by W. Whitaker et al. Published with Drift, Dec. 1896.".