Yesterday I made a return visit and although I wasn't expecting to find the car park full of day trippers, I was surprised to find that I was the bunker's only visitor. It made the whole experience even spookier.
For two hours I was in one of the safest places in Britain and if anyone had decided to launch an impromptu nuclear strike, I would have been completely unscathed. Physically, at least. Mentally, I'm not sure how well I'd have coped with living on a diet of Huntley and Palmers biscuits with only a malodorous Essex farmer to keep me company.
While I was in the bunker I took lots of photos, but they don't really capture the unsettling atmosphere of the place, so I've also made this short film with some added BBC Radiophonic musique concrete from the late 1960s. The music goes a bit mad at the end, but then so did I: