On 30 Jan, 18:39, Offramp wrote:
I suppose that explains the Northern Line's movement from left to
right between Moorgate & Bank until after Kennington. It must be to
make connections easier.

Er, the Northern Line switches back at Borough-ish, and is due to the
way the original crossing of the Thames to King William Street (near
Bank) was built, though it's a very long story.

If the lines need to switch at Euston because the northbound Northern
is going west while the northbound Victoria is going east. That's not
the case at Stockwell and Kennington.

U

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