The Furness Railway 120 class (classified K1 by Bob Rush)[1] or "Seagulls", were a class of four 4-4-0 steam locomotives designed by W. F. Pettigrew and built by Sharp, Stewart and Company of Glasgow for the Furness Railway in 1890.

They all passed to the London, Midland and Scottish Railway at the 1923 grouping.

They were withdrawn between 1924 and 1927.

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