Inside a diesel train at Barking - this train was going to Kentish Town / it predates the Goblin service to Gospel Oak.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/47739225@N08">citytransportinfo</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/citytransportinfo/26645617224/">DMU Barking inside</a>