Sample Map This full colour single sided map is one of a series of five maps covering Great Britain, with a continuous grid referencing system. This enables several or all of the sheets to be mounted together whilst retaining the compatibility of the index. The map covers an area extending to Llangollen, Stoke-on-Trent, Nottingham, Boston, Cromer, Great Yarmouth, Lowestoft, Felixstowe, Clacton-on-Sea, Southend-on-Sea, Margate, Dover, Hastings, Eastbourne, Brighton, Portsmouth, Isle of Wight, Bournemouth, Weymouth, Budleigh Salterton, Watchet, Cardiff, Merthyr Tydfil, Brecon, Builth Wells and Welshpool. Map information includes motorways open with full junction detail, motorways under construction and proposed, service areas, primary routes and destinations, A and B roads, selected major road service areas, gradients 1:5 and steeper, tolls, mileages, national and county boundaries, spot heights and contour colouring.