Lemberg was built at Doncaster Works in July 1924 as a LNER A1. He wore the number 2544. Lemberg was one of the first A1s to be rebuilt to an A3, in December 1927. Under Edward Thompsons re-numbering scheme of 1946, he was renumbered 45. During British Railways service, he was numbered 60045. In 1958/9 he was fitted with a Kylchap blast pipe and smoke deflectors. He was finally withdrawn in November 1964 and was scrapped soon after.