'Sir Haydn' at Salisbury station

Sir Haydn is the Talyllyn Railway's locomotive No. 3 and he had been invited to attend an exhibition at Waterloo Station in London. As he was not able to use the infrastructure to get there under his own steam he decided to go by train instead!

The Talyllyn Railway is a 2 ft 3 in (686 mm) narrow-gauge preserved railway in Wales, run by volunteers and runs for 7.25 miles (11.67 km) from Tywyn on the Mid-Wales coast to Nant Gwernol, near the village of Abergynolwyn. The line was opened in 1866 to carry slate from the quarries at Bryn Eglwys to Tywyn, and was the first narrow gauge railway in Britain authorised by Act of Parliament to carry passengers using steam haulage.
In 1951 it became the first railway in the world to be preserved as a heritage railway by volunteers.

A scan from an Agfachrome slide, since sold.