From the Tube Map Central archives: decorative maps, designed for delight, not navigation. My Chicago El map inspired by Frank Lloyd Wright is my most intricate design, it took three years to get right and won a cartography award. More maps at tubemapcentral.com/webshop/decora…

If I was choosing new line colours, I might try to quarantine them so that the new colours don't get close to lines which already have those colours.

Unlike London, Cologne really is a circles-and-spokes city, and I'm delighted to say that in 2022 KVB officially adopted a concentric circles map based on my work.

Couldn't resist. This is an empty map rack at Euston Square Underground station, photographed today, and the writing at the top says "Pick up a leaflet to see how we're making travel better for all Londoners". The irony is brutal.

Thanks! It fell out naturally once I decided on the design approach. Saving paper doesn't help if it makes the whole thing unusable, doesn't matter what design rules you use, it needs to be on A3.

Today, Underground Maps Unravelled joins Underground Maps After Beck as out of print. Still available: Airline Maps: a Century of Art and Design and Tube Map Travels: Imitations, Adaptations and Explorations Worldwide tubemapcentral.com/writing/books.…

This is one of my favourites things ever, by artist Frederick Abrams undergroundcathedral.com If you like maps and work in stained glass (or know someone who does) then get in touch.

Thanks to the team at Perfect Colours for the hard work getting my new HP z6 printer up and running. It was not an easy installation but the engineer was fantastic. Switching to a new large-format printer is never easy but I am now catching up on my backlog of poster orders.

We now seem to have a date for the new Overground colours to be officially implemented, late September, so here is a sneak preview of my own circles map updated.

My new printer is now up and running and in production. Everyone who has ordered a poster of my circles map will be given a choice, new colours or old colour. Order direct from here: tubemapcentral.com/webshop/london…

People who order a giant 44 inch print give me a rare opportunity to see the map at its most imposing. Wow.