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TheNER Class W1 was a4-6-2Tsteam locomotive of theNorth Eastern Railway. The class was introduced in 1914 as a rebuild ofWilson Worsdell'sNER Class W4-6-0T (introduced 1907). At the1923 Grouping, they all passed to theLondon and North Eastern Railway, who placed them in theirClass A6.

Seven of the locomotives were fitted withsuperheaters between 1937 and 1944.^[2]

One locomotive was withdrawn in 1947 but the remaining nine passed toBritish Railways in 1948 and were numbered as follows:

• Superheated: 69791-69793 and 69796-69797
• Non-superheated: 69794-69795 and 69798

One locomotive was withdrawn in 1947 and the others had all been withdrawn by the end of 1951. None are preserved.

• Fry, E. V., ed. (April 1964).Locomotives of the L.N.E.R., part 7: Tank Engines - Classes A5 to H2. Kenilworth:RCTS.ISBN 0-901115-13-4.{{cite book}}: CS1 maint: ignored ISBN errors (link)

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