On Tue, 13 Nov 2007 12:06:47 -0800, Mizter T wrote:

I can say with some authority that despite PAYG not yet being valid on
the NLL at the time the Tfl Fares finder was right and that's what you
would have been charged. Back in February or March of this year (I
forget exactly when) I made a Highbury & Islington to Queen's Park
journey via Victoria and Bakerloo lines changing at Oxford Circus. I
had already reached my zone 1&2 daily cap so was totally bemused when
an extra 60p was deducted from my balance - i.e. my cap was now at the
zones 1-4 level of £5.20 rather than £4.60, despite the fact I hadn't
been in zone 3 - indeed, there was no valid route from H&I to QP
through zone 3.

Later on the penny dropped that the Oyster PAYG database had already
been updated to take account of PAYG on the NLL, either it was being
tested or perhaps there was something to the talk that PAYG might go
live whilst the line was still under Silverlink control.

I maintain that it was defined as a Z23 journey (rather than a Z12
journey) so that holders of Z23 Travelcard seasons on Oyster making
this journey using the NLL would not get charged an extension fare.