"Huge" wrote in message

Paul Terry writes:

[20 lines snipped]

I seem to remember that the interchange at Green Park involves quite
a long underground walk

It does. And several flights of stairs.

The easier route is up the Piccadilly escalator to the booking hall and then
down the Victoria escalator. It's quicker and shorter. To minimise the
walking, board the last car of the Picc train and take the middle escalator.