On 11 Apr, 11:03, Colin McKenzie wrote:
- how hard would it be to quadruple to Neasden?
I know there's spare space between the platforms at Wembley Stadium,
and IMO the potential traffic would justify quadrupling at least to
West Ruislip, if not to High Wycombe.

A quick scroll through Google Earth will tell you quite easy for the
first few miles, then you start having to build new viaducts and
demolish long rows of houses. Tunnelling would probably be easier.

- are the two extra Marylebone platforms mentioned by Paul feasible?

Not just feasible, already built. But you'd need many more platforms
to make use of four tracks. Again a tunnel into central London would
be a better option.

(you might like to check out Crossrail plans ca. 2001)

U

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