"Colin" wrote in message
...

On a related theme , does anyone know how far the running tunnels
extend
south
of aldwych? Do they reach the river?

B2003

No they don't. They go less than 10 metres past the end of the platform,
which means they must be at least 100metres from the Thames Embankment.

On a slightly different tangent however, the overrun tunnels east of Charing
Cross on the Jubilee Line do almost reach Aldwych, indicating one
possibility that was considered at one time. I don't know whether the track
runs the entire length though, or what lurks at the very end (parts of the
TBM I expect).

Regards
John M Upton