To many, trainspotting sounds like a boring hobby, a pastime meant only for those who would happily spend all day on station platforms waiting for a train to appear. But ask a rail enthusiast why they're prepared to stand for hours to record passing rolling stock, and you'll be regaled with a fascinating history of how this unique leisure pursuit evolved.
But if you'd rather catch a train now, hop aboard and find out why some people go loco for locomotives! Click through the gallery and get on track...