“TEDDY was a popular attraction at Locomotion - The National Railway Museum at Shildon during the Spring Bank Holiday weekend 2016. "Teddy" was one of two locomotives in steam for passenger service and cab access. "Teddy" is known as a Yorktown class 0-4-0 saddle tank and built in 1941 by by Peckett and Sons of Bristol and is believed to be the smallest working standard gauge steam engine in the UK.