Preserved Great Western Railway 4900 Hall Class steam locomotive number 5972 Olton Hall aka Hogwarts Castle wearing the Hogwarts Express headboard at Tyseley locomotive Works open day July 5th 2014. 5972 was designed by Great Western Railway Chief Mechanical Engineer Charles Collett and built at Swindon Works in April 1937. 5972 was withdrawn from service in December 1963.