In message , at 11:03:54 on Fri, 27
Mar 2015, Clive Page remarked:
- a station connecting to both Euston and King’s Cross, instead of at
King’s Cross only

That seems very sensible. If only they had thought of that when
planning HS2.

But it just occurs to me, perhaps they could add to the new station a
pair of moving walkways connecting Euston with the King's
Cross-St.Pancras complex? This would be greatly appreciated by all
those who currently slog along the uneven pavements, exposed to the
weather, between these two locations. It would also connect
Eurostar/HS1 services and HS2, which currently have this large air gap
between them.

This idea crops up regularly (for as long as I can remember). I think
the problem is the number existing things both above and below the
ground over the route.
--
Roland Perry