The UR MS class, known later as the KUR MS class, later still as the KUR EE class, and finally as the EAR 10 class, was a class of 1,000 mm (3 ft 3+3⁄8 in) gauge 2-6-4T steam locomotives built by Nasmyth, Wilson and Company in Patricroft, Salford, England, for the Uganda Railway (UR).

[3] The UR acquired them to carry out shunting and light traffic duties on its branch lines.

[4] All members of the class continued in service after the UR was renamed the Kenya-Uganda Railway (KUR) in 1926, and were reclassified in 1929 as the KUR EE class.

[3] In 1949, they became part of the fleet of the KUR's successor, the East African Railways (EAR).

1003, has been preserved, and is on static display at Jamhuri Park in Nairobi.