Assuming I understand the system right! On Jun 17, 10:47 am, James Farrar wrote:
On Sun, 17 Jun 2007 10:37:06 -0000, XmaX wrote:
Hi, I often travel from Z2 to Z4 via Z1. Can I buy a Z234 travelcard,
or do I need a Z1234? I assume that it might be fare evasion if I use
it, but will it let me through the gates?

That's what I thought as well. But then the thing that confuses me is
the Oyster shop on the TFL website (which asks you "From Zone" and "To
Zone") and some people here saying that the in case of a travelcard,
the system assumes that you take a route without Zone 1 in this case.
(ie. the predetermined fares apply only to PAYG, and for travecard
only the start/end station zone counts).

I usually travel between Bow Road and Greenford, Acton Town and Ealing
Broadway, so theoretically, it is possible to not go through Z1 by
using the NLL.