A talk in May

I'm giving a talk at Westminster Reference Library on Friday 18th May which will probably be called 'Secrets of Subterranean Westminster' - starts at 6.30pm, FREE entry.  It will cover the usual topics: disused underground stations, deep cable tunnels and bunkers amongst other things.  I'll have a few copies of my books for sale, although probably none of the new book, as it won't be out until late May; it's being published under the auspices of Accumulator Press.