PhilD wrote:
The 4th rail goes as far (more or less) as Kilburn High Road. LU has
emergency access rights over this stretch, but I'm led to believe
that
the 4th rail isn't in situ for the whole stretch. I am also led to
believe that a battery electric loco sometimes runs to/from Kilburn
High Road some nights.

Hope this is of interest.

Cheers. Wonder if they had ever considered running tube trains into
Euston station itself..... Now theres a thought.

B2003