LNER Class A4 4902 Seagull

LNER Class A4 4902 Seagull, renumbered 60033 under British Railways, was one of the 35 Class A4 Gresley Pacific steam locomotives built at Doncaster. It entered service on 28 June 1938 and was withdrawn on 29 December 1962. Like Mallard it was one of only four A4s built with a double chimney and Kylchap double blastpipe. It was based at King's Cross and worked the London to Edinburgh line, and in 1948 it was one of three A4s used in the Locomotive Exchange Trials, running on the former Great Western main line between London and Devonshire, where it did better than Mallard and than the Southern and LMS competitors, though not the Great Western locomotives. Over its career it was fitted with eleven boilers and three tenders, and it was broken up at Doncaster Works on 23 January 1963.