The transmission of the Taurus locomotives worked on a similar principle to that of the Fell diesel tested during the early 1950s.

The first Taurus (works number 2875) was demonstrated and tested on British Railways during 1961 and 1962 and a builders sectioned elevation drawing of the machine appeared in the July 1961 issue of Trains Illustrated Magazine.

Taurus was a ‘trip’ locomotive intended to carry out shunting work and hauling local (short distance) goods trains.

Two Indus locomotives were built in August 1962 – one for Richard Thomas and Baldwins’ Llanwern steelworks, the other for Stewarts & Lloyds Corby system.

A second Taurus locomotive was built for RENFE, the national Spanish railway network, to a gauge of 1,668 mm or 5 ft 5+21⁄32 in.