Steve Dulieu writes
I wonder if the current Northern line trains were built to allow for a
future conversion to Central line style automatic train operation.

yes they are, all the buttons are there, not sure if atp/ato contorllers
have been installed.

Good news!

I wouldn't hold your breath, '73 stock (Piccadilly) were built with the
buttons to allow for Victoria like ATO. they were never used and were taken
out (those that hadn't already fallen out) when the stock got refurbed.

But if the Northern line is due for resignalling sometime soon, then it
increases the chances. Having new trains and new signalling within a
(relatively) short period of time - as with the Central line - means
that ATO can be considered.

But you're right - expecting improvement to PT in this country is
probably foolish. Assume the worst and occasionally be pleasantly
surprised!

--
Dave