I’m on my summer holidays, so here’s a guest episode. Skylines’ founding producer Roifield Brown recently teamed up with Luton’s own Claire Astbury to launch a new podcast. Map Corner covers maps, cities, transport systems, and all the other things that Skylines listeners are into. They were kind enough to invite me on to talk about maps, Spain and Helsinki the other day, so this is that episode. It isn’t just me though - there’s also an extensive discussion of the British road number system, along with much, much more. If you like Skylines, you’ll like this, and you should subscribe immediately. All being well I’ll be back in two weeks. Skylines is the podcast from the New Statesman’s cities site, CityMetric. It’s hosted by Jonn Elledge. For information regarding your data privacy, visit acast.com/privacy