The programme starts in the south west of England and traces the former GWR route to London (Paddington) via Swindon and Didcot in the 1950s and ‘60s when steam - in the form of ex-GWR designs - still predominated. Action on the main line starts at the extremity of south west rail operation - Penzance. From there the main line is followed east with scenes at Gwinear Road, Chasewater, Truro, Par, Lostwithiel and the impressive junction layout at Liskeard, before the Saltash Bridge is crossed on the approaches to Plymouth. Arrival in London finds a fascinating array of steam and early diesel classes operating at Old Oak Common and Paddington - a fitting finale to this visual record of British Railways’ Western Region in the steam era.