I’ve said before that I don’t like London. I avoid having to work in London wherever possible. But, if I’m honest, I don’t really know the city that well and always tend to go back to the same old places when I am there.
A HiddenCity trail is basically a treasure hunt delivered by SMS messages. You get a text message with a clue for something to find. Once you’ve worked it out, you reply by SMS. If you’re right, you get the clue for the next step of the hunt.