lonelytraveller wrote:

That leaves a huge area - around camberwell - utterly without any rail
connection, and certainly without one that's useful for getting into
town.

The only way to plug the gap is for the northern line to go to
camberwell.

The fact that Camberwell contains a road called "Camberwell Station Road"
shows the flaw in that argument.

Taking the northern line to battersea really messes that possibility
up, and essentially precludes it ever occurring.

No - sending half the trains to Battersea and half to Camberwell probably
matches supply with demand better than a single extension.

--
We are the Strasbourg. Referendum is futile.