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<div>If this is referring to what I posted earlier, then you have chosen a different map to what I linked.<br></div><div><br></div><div>Here is the London grid map displayed using what you did:<br></div><div><br></div><div><a href="https://geo.nls.uk/mapdata3/os/ldn_tile/#ldn_nat_grid/ol3">https://geo.nls.uk/mapdata3/os/ldn_tile/#ldn_nat_grid/ol3</a><br></div><div><br></div><div>On the right, it shows background imagery. "OpenLayers3" in a map of OSM, although you can display this NLS imagery over google maps, or leaflet, or "google maps API".<br></div><div><br></div><div>Don't know what the "holes map" which you linked was however. It doesn't show house numbers but seems to have more coverage.<br></div> </body>
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