On Sun, 17 Sep 2006 02:19:18 +0100, Matthew Dickinson wrote:

The latest fare leaflet has a subtle alteration to the list of
National Rail services where PAYG is valid. It now lists Stratford -
Tottenham Hale / Seven Sisters. This journey was always technically
possible on PAYG, but not included in the list. Paper LUL tickets are
now also valid on this service.

Previously, it would only have been possible on PAYG by going via
Liverpool Street. This addition means PAYG is now valid on the direct
services that use the Lea Valley line.