On 2011\11\14 23:50, Martin Rich wrote:

"The Gardener" wrote in message
...

It would be great if the Northern City could be extended south to
Bank, or further.

Sadly, that's very unlikely as it's not that deep a line at Moorgate,
and there are building foundations in the way. In any case, without
platform lengthening, it probably would not be justified.

If I remember rightly, it's not just any building foundations, but the
the Bank of England's vaults, that would thwart this particular extension.

I think you're thinking of the Waterloo & City Line. The Great Northern
is far enough away from Bank that you could avoid any particular
building if you were happy to demolish others.