© ellyBelly Publications
The glamour and high speeds achieved by the trains on
the fast lines may eclipse the relief line traffic, but these Pressed Steel 3 car Class 117 DMUs, all allocated to the specialised depot at Southall, plied their trade reliably for decades. Sometimes they were allowed onto the main lines on a rush-hour Oxford semi-fast and picked up their skirts to run at 70mph given the chance. In these circumstances it was advisable not to sit in the front power car to save your hearing and stay in your seat across the junctions at Slough.