By the time the new locomotives were built and entered service, the KUR had been succeeded by the East African Railways (EAR), which designated them for a very short time as its EC6 class, but then, as part of a comprehensive reclassification of all of its locomotives, redesignated them as its 56 class.
Class list
The builder's and fleet numbers of each member of the class were as follows:
Patience, Kevin (1976), Steam in East Africa: a pictorial history of the railways in East Africa, 1893-1976, Nairobi: Heinemann Educational Books (E.A.) Ltd, OCLC3781370, WikidataQ111363477