I have been looking through old railway magazines over the Christmas break in 2018 and came across articles in the 1950 editions of the Railway Magazine which relate to this series of posts. The first is in the April 1950 edition of the magazine. ……..
The April 1950 edition of The Railway Magazine  contains the first of these articles written by Thomas H. Cobb.
He begins with a relatively short description of the route of the line, first focussing on the route via Kisumu (Port Florence) and Port Bell to Kampala and then on the route via Tororo.
He comments: “These lines have always been state railways, though they are administered as a separate department.”
Cobb goes on to describe a journey on the line. He notes: “There is practically no difference between first and second class, except that the former have a fan and bed-reading lamps, and are slightly less crowded. Third class carriages have wooden seats and centre corridors; they are always crammed to bursting point. Hire of bedding, and food in the restaurant cars is cheap, and passengers are officially encouraged not to tip company servants – but they do. Speed is never high; the up mail train covers the first 30 miles out of Mombasa in 100 min., including two stops. All trains stop at all stations, with the exception of a few ‘local’ stations neat Mombasa and an odd flag stop or two usually missed by the mails.”
The Uganda Mail heading for Lake Victoria in the Kikuyu Hills, banked by 4-8-0 Locomotive No. 69. 
An EC3 at the spiral close to Timboroa Station. 
He concludes with some trivia:
- from Mbulamuti to Jinja the east-west main line runs distinctly eastwards for about 20 miles.
- The curves on the line have the inner edge of the outer rail oiled by hand twice a week.
- The two summits of 8,322 and 9,136 ft. on the Kisumu and Kampala lines respectively are only 20 miles apart, but on quite separate lines, yet they have each pursued an independent course of over 60 miles from their divergence at Nakuru.
- The only racial discrimination on the railway is against Europeans, as they are not issued with tickets below second class, even for trains which consist of third class carriages only.
- Thomas H. Cobb; The Kenya-Uganda Railway; in The Railway Magazine No. 588 Vol. 96 April 1950, p262-267.
- The Railway Magazine April 1950, p250.