From Aberdeen to Paris: Mapping the British gaming advertisers circa 1985

So here's something I've wanted to try for years. I logged the names and addresses of all the ads in White Dwarf issue #68 (September 1985), excluding the small ads (i.e. the classifieds). I only know a tiny thimbleful of British geography, but I really wanted to see where all these game companies, retailers, play-by-mail outfits, and miniatures manufacturers could be found. So I put the data into Google maps: