The London Underground is synonomous with London history and has always been secretive and had an American connection. The entrepeneur (tbc) who built the first line, a cut and cover was a yankee gringo businessman. Londoners would have just liked the loud shouting voice which they themselves got from Hugenaut fishwives.
The secretivity started when Lancaster Bombers were built under Lancaster Gate Tube Station.
Now London Underground needs to emerge from under the ground to Grace London as in WW2.
No cycles are allowed in London Underground because of Dry Cleaning costs if a woman gets oil on her dress.