The Avonmouth train heads off down the line from Montpelier station in Bristol. 166212 is one of the 'Turbo' units recently transferred from the London area by Great Western Railway.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>