For someone from, visiting, or interested in London, a rewarding but maybe less well-known book on the city might be Tom Bolton's Vanished City - London's Lost Neighbourhoods: compact, but satisfyingly dense. Same for Bolton's London's Lost Rivers. Both are pocket sized - which is useful, as they may well inspire a wish to explore. (Both published by Strange Attractor.)
For a Scottish read - I have a big soft spot for George Rosie's Curious Scotland. Not strictly Fortean, but full of odd and quirky detail - and a very satisfying read. Each chapter has a distinct subject, and it's a good 'dipper' for those who like to bob in and out of a book. I've seen claims that some of the historical detail may be a little overtaken, but it's worth pointing out that many of the poorer reviews of the book appear to have been based on the author not being nationalist enough, rather than inaccurate. (These reviewers clearly have absolutely no Idea of Rosie's background, and haven't bothered to look; he just likes to poke holes in myths - personally I don't see any contradiction in that and any form his politics might take.)