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Ex-LNWR 0-8-0 class G2 No 9429 and ex-LNWR class G2a No 9340 are seen in steam standing in front of Coventry shed during the Second World War on 5th August 1943. Known to railway enthusiasts as 'Super Ds' because a large number of the original G1 class engines were rebuilt from George Whale's class D 0-8-0s. They were Super Ds - super for superheated. Built at Crewe works in February 1922 No 9429 remained in service until November 1959 when it was withdrawn from Edge Hill shed near Liverpool to be scrapped in May 1960 at Crewe works. Built at Crewe works in September 1918 No 9340 remained in service until August 1959 when it was withdrawn from Patricroft shed in Manchester for scrapping in August 1959 by Crewe works. The LNWR built eight-coupled locomotives under Webb, Whale, Bowen-Cooke and Beames between 1892 and 1922. The G class were originally introduced in 1906 as modifications of the 4-cylinder compound B Class 0-8-0s by removing their outside cylinders to give a simpler two cylinder layout. From 1912 superheating was introduced and most of the B class were converted into G1 Class, not G Class. The G2 class were new builds with increased boiler pressure from 160lbf/in² to 175psi. Some G1s were converted to G2a classes after their boiler pressure was increased. After grouping in 1923, they were acquired by the LMS who gave them the power classifications 6F for G1 and 7F for G2 and G2a locomotives. The design of the LMS 7F 0-8-0 (known as the 'Austin 7') was derived from the G2 but the former was a poor engine in comparison and the "Super Ds" outlived the 'Austin 7s'.
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