As a crowd of passengers wait on the southbound Bakerloo Line platform, the station PA springs to life with a bing-bong. They brace themselves for further news of the latest delays and suspensions. But the announcement isn't a delay, it's a personal call:
"If there is a Stephen Lewis on the station, please make yourself known to a member of staff. Stephen Lewis, please make yourself known if you are on this station. Thank you."
Stephen Lewis fights his way through the crowds on the southbound platform to the blue-uniformed woman standing next to the back wall. "Er, I'm Stephen Lewis - you paged me?"
She smiles at him and holds a brief conversation with her radio. "We've got a message for you.."
Twenty seconds later, the waiting passengers are startled by a sudden cry of "A girl! Eight pounds! And two weeks early!" as Stephen Lewis heads for the escalators and the first available train straight back home.