On 25 Jul, 14:10, D7666 wrote:
On Jul 25, 5:58 am, "R.C. Payne" wrote:

Interesting, when we were having a discussion on (electric) buses and
tunnels [1], Clive Feather posted details from sectional appendices
covering the thamelink route, and they suggested that electrostars were
permitted Blackfriars - Farringdon, but not (Moorgate -) Farringdon -
Kentish Town, for the latter, only 317 and 319 were listed as permitted.

[1] subject was "EMUs on Thameslink" if you want to google it

I recall the thread.

And 377s are cleared - they were so cleared about 2-3 years ago when
test runs were made with 377/2 when Bedford depot opened. Under GoVia,
the plan was Bedford would take on certain 377 maintenance after the
KX tunnel block was lifted. Since then TL changed hands.

It is not unknown for Sectional Appendices to have errors and
omissions.

--
Nick

Latest sectional appendix (NR electronic version) shows clearance for
all 377s.

Cheers

Peter