The video clip below is from iconic 60s show, Thunderbirds and shows the characters making a journey through a very dirty Piccadilly Station and ending up at Bank station.
Tube geeks may now debate the route taken.
Did they swap onto the Central Line by travelling through the passenger parts of Holborn station, or carry along the Piccadilly Line towards Kings Cross and then use the King's Cross Loop tunnel that links the Piccadilly Line to the Northern Line, then head down to Bank?
This was my last guest post before I hand back to AnnieMole who returns from luxuriating in Bali to the wintry London skies next week. You'll find me returning back in my hole over at IanVisits. Hope you enjoyed, or at least, tolerated the interlude.