if the rules are:
Nothing run, contracted by or licensed by TfL, or by any other local authority
No leaving stations
then that takes care of Overground and cabs...
And then it becomes interesting because:
If it is a weekday, then Fenchurch Street is isolated completely. On Weekdays C2C has no interchange whatsoever with non-TfL passenger rail services.
If it is a weekend, then Paddington-West Ruislip is not available as a link. But on a weekday it severely limits when you can travel anyway.
Liverpool Street to anything other than Fenchurch Street requires a trip to Cambridge
Kings Cross realistically means using Finsbury Park to change to Thameslink to go anywhere other than Cambridge for Liverpool Street.
St Pancras gets you the Marston Vale line, which gets you the West Coast Mainline into Euston, and also the west london Line to Clapham to connect to the Southern Region terminals, which you could also have got to from St pancras.
Nothing run, contracted by or licensed by TfL, or by any other local authority
No leaving stations
then that takes care of Overground and cabs...
And then it becomes interesting because:
If it is a weekday, then Fenchurch Street is isolated completely. On Weekdays C2C has no interchange whatsoever with non-TfL passenger rail services.
If it is a weekend, then Paddington-West Ruislip is not available as a link. But on a weekday it severely limits when you can travel anyway.
Liverpool Street to anything other than Fenchurch Street requires a trip to Cambridge
Kings Cross realistically means using Finsbury Park to change to Thameslink to go anywhere other than Cambridge for Liverpool Street.
St Pancras gets you the Marston Vale line, which gets you the West Coast Mainline into Euston, and also the west london Line to Clapham to connect to the Southern Region terminals, which you could also have got to from St pancras.