The NLS have uploaded a set of historical maps which overlay on Google Maps, making them easy to use and navigate. While there’s a focus on Scotland, there are maps for the whole of the UK also – and even beyond.
See Also: Georeferenced maps and applications
See Also: Maps of Scotland (More than 20K)
Mobile: This historic UK map is also accessible on an iPhone/Pad/Touch and Android. Use the same URL as the primary web site: http://nls.tileserver.com/ or simply scan the QR code and go directly there.