asdf wrote:

IIRC the directions on the Picc are referred to as eastbound/westbound
between Heathrow/Uxbridge and Covent Garden, and northbound/southbound
between Covent Garden and Cockfosters.

IIRC it's N/S from Cockfosters to Russell Square, E/W from Covent Garden to
Heathrow/Uxbridge, and N/W at Holborn (perhaps the platforms for Aldwych
were called Southbound platforms).