In the early 60's Triang produced under the "Minic" brand a garden railway of 10.1/4" gauge.
The loco was an E5000 class electric which used to pass the Triang works apparently. There were also Pullman and toast rack coaches .
This website of the Triang Minic narrow gauge railway explains more,
http://www.tmnr.co.uk/
White I was still at school in the early 60's I was told by my father who was a coal merchant that one of his customers was looking for a driver for a miniature railway which was to be installed at the local Zoo.
I was interested and helped on the railway at weekends and school holidays. The layout was a large oval with a garden shed and platform at one side.
The train was covered with a large "Box" when not used.
The original locos were intended for private use and had the control switch mounted on the loco and it had one motor.
The "professional" version had two motors and control was from the track side shed like a giant 2-rail model railway.
The original controller was a two or three speed switch which did not make for smooth starts and was soon replaced by a fairground type multi-stud and resistance type which was much better.
I helped on the railway for some years but eventually it wore out and was ( I think) given to a children's home.
Hope this is of interest, Colin.