Two VHS videos.
The first features Class 50 locomotives and has three chapters: The History of the class - 50's on the Waterloo to Exeter line - 50's at work during 1987/88. Runtime is 50 minutes.
The second film is Video Track issue 8. This film has four chapters: The Diesel Hydraulics - News & Events - Class 37's in Scotland - Mid Wales. Runtime is not known.