166207, GW 06.39 Bedwyn-London Paddington (1K25), London Paddington station
First Great Western's 166207 arrives at Paddington station passing through the huge throat. It is working 06.39 from Bedwyn a small village in Wiltshire and the Berks. and Hants. route that I visited back in 1978 when the motive power observed was a little different than a Turbo unit, see...... https://www.ontheupfast.com/v/photos/21936chg/25327932004/x50026-unidentified-up-working-bedwyn