For those who aren’t intrigued by British “Modernistation Plan” diesel locomotives, hang in there, there is coverage of South African Class 25 Condensing 4-8-4s and East African Class 59 Beyer-Garratts. There are also Brazilian electric locomotives and Argentine metre gauge diesels, and a couple of shots of the Queensland “Sunlander” train behind an English Electric diesel.
The Western Region twin engine diesel hydraulic locomotives of the D600 series, built by North British, and featured in the video, have not survived, nor have the smaller single engine diesel hydraulic and diesel electric locomotives that may have appeared after the documentary was made.
North British built some of the South African Class 25 4-8-4s included in the video.