I gather it would be time for a splendid game of Mornington Crescent.
A current playmap can be found
here.
The ruleset can, of course, be obtained in the usual online repositories.
I suggest we use the Duke of Cornwall ruleset in its 1987 incarnation, and add the Great Portland Street Expansion (for it's beautifully straightforward integration rules), the famous Three Stooges (Duke of Cornwall has the unfortunate tendency to lead to entrenched situations, and I've found that they help shake up things again and restore fluid gameplay), and four house rules:
1) Mornington Crescent may not be claimed before the sixth page of the thread, using standard page lengths.
2) Alternative victory conditions as introduced by Great Portland Street do not apply.
3) The Docklands Light Railway, London Overground, and Emirates Air Line are excluded from play. Call me a purist, if you like.
4) Contrary to Duke of Cornwall rule 387d, paragraph 3, item A, Bridges are not considered Elements in the spirit of rule 230.
Participation is open: anyone can enter the game at any time. Already established players are asked to behave like gentlepersons and go easy on the newcomers.
Turns are counted Victoria style. (as in, not counted: players are asked to space their moves honorably.)
Please format the station name that constitutes your move in bold and supply the map region.
I will use the Dunkirk Opening, as named and made famous by Landon in the 1940 Royal Championship, and start with
Cannon Street [D6]