Swindon control discovers an intoxicated man running around the tracks, forcing them to shut the line. Engineers at Cowley Bridge near Exeter insert 24 huge culverts to ease flooding there. In Paddington, a drink-addled dentist is convinced he has left his bag on a train.

Swindon control jump into action when an unexploded WWII bomb is found near the line in Teignmouth, transport police seek a word with a man who jumped onto the track to retrieve something he dropped, and team leader Martyn reveals the high cost of cleaning up graffiti.