There was a sense of excitement in the air as participants of all ages gathered on a cold and showery February afternoon. They'd come together at Locomotion, the railway museum in Shildon, County Durham, to attempt to break the world record for the most people dancing to - fittingy - The Loco-Motion. The mass dance off was the final chapter in the programme of events to celebrate the Stockton and Darlinton Railway's 200th anniversary. Hundreds turned up to play their part in