If anyone is trying to access stuff at the British Library but can't due to the #CyberAttack, National Library of Scotland is worth a try.
For example, it has some historical maps of the entire UK.
I've been looking at a large scale one for Suffolk, where my grandmother's family farmed up til the 1880s, and overlaying a modern satellite view. #BritishLibrary#maps https://www.nls.uk/