Image:Greater_london_outline_map.png showing built up areas in grey, motorways in blue, water-bodies in light-blue and London borough and county boundaries
DescriptionLondon urban area UKlocationmap.svg English: London urban area UKlocationmap. Date 9 December 2014 Source Derived from: File:GreaterLondonUK location
Railways Maps and Gazetteer from 1830–1981, Oxford Railway Publishing Company, Oxford, ISBN 0 86093 162 5 (2011) Network Specification 2011 – London North