Although there are a number of former South African railways loco's running on the narrow gauge railways in the UK , there are also single locomotives in museum's and that is the purpose of this page . 1] The first 13 pictures show North British built SAR 3007 works no 25546 built in 1946 in the Riverside transport museum Glasgow . 2] 14 photos showing Beyer Garrett , works no 6639 at Manchester museum of science and industry 2016 .