I always carry a camera with me. It sounds like an obvious thing for a photographer to do but you'd be surprised how many don't. I think this 'habit' has come from studying documentary photography - i just live in fear of missing the shot of a lifetime.
This shot was a quick grab. One of those point and shoot moments where you hope that the camera is set to get an OK photo. The Billy Smart's Circus truck has been driving around the town for the last few days, drumming up trade and giving the Circus a noticeable presence.
In days long ago they would arrive and parade through the town with the exotic animals, acrobats and clowns being centre of attention. I suppose this advert truck is the 21st century version of a parade.