At the weekend, JTA and I – along with our eldest child – explored the Clapham South Deep Shelter as part of one of Hidden London‘s underground tours, and it was pretty great!

I’ve done a couple of bits of exploration of subterranean London before: in the service tunnels around Euston, and into the abandoned station on the Aldwych branch line. But I was especially impressed by the care and attention that had gone into making this particular tour fun and engaging.

The site itself is deep: trains on the Northern Line – already one of the deepest lines on the London Underground – can be heard passing above you, and any noise from street level is completely gone (even the sounds of bombing couldn’t be heard down here, WWII residents reported). It’s also huge: long interconnected tunnels provided space for 8,000 beds, plus canteens, offices, toilets, medical bays, and other supporting architecture.

To extend the immersion of the theme even further, there’s a “warden” on-site who – after your 179-step descent – welcomes you and checks your (replica) night admission ticket, identifying which bed’s bed assigned to you. The warden accompanies your group around, staying in-character as you step through different eras of the history of the place! By the time you get to the interpretative space about the final days of its use for human habitation – as a budget hotel for the “Festival of Britain” national exhibition in 1951 – he speaks fondly of his time as its warden here and wonders about what will become of the place.

All of which is to say that this was a highly-enjoyable opportunity to explore yet another hidden place sprawling beneath London. The Hidden London folks continue to impress.

If you want to see a little more, they’ve released a video just yesterday: or for the full experience, see if there are any slots you can make to visit the place for yourself.