On 24 Nov, 19:58, Paul Terry wrote:
In message , Tim Roll-Pickering
writes

It is only needed if you have a season/travelcard on your Oyster and you
want to use PAYG in order to pay for an out-of-zone journey.
Yes but if you have the season/travelcard already on it's difficult to use
PAYG. For instance if I have a Zones 1-3 travelcard and want to go Forest
Gate (Z3) to Ilford (Z4) I *can't* just use PAYG - I will *have* to get an
OEP which won't be available at my local starting station.

Agreed - you'd have to go to the Oyster shop just opposite the station.
OTOH, you can add the OEP at any time and from any convenient place that
supplies it - it costs nothing and it remains there to use for whenever
you want it.

But I suspect that NR ticket offices in the London area will eventually
provide the full range of Oyster services - it would be madness not to
do so.

And no doubt the paper extension fare will be whacked up to punish me
for not buying something unavailable to me.

It's not "unavailable" unless you can't cross the road to the Oyster
shop, and I've not seen any evidence in the 2010 fares tables of zone
extension tickets being "whacked up".
--
Paul Terry

Just off the top of my head ... Where is the Oyster shop just over
the road from

St Johns
Lewisham