Train driver (Seed of Chaos)
From Tardis Wiki, the free Doctor Who reference
A train driver hit the zombified Captain Warwick and his soldiers in the London Underground. He recognised Naomi Davies from the news and, believing that she was filming for television and fleeing from terrorists, allowed her, Charlotte Pollard, Robert Buchan, Woking and Rab aboard the train. He stopped the train at Embankment. (AUDIO: Seed of Chaos)