Henry wrote:
On 12-Dec-2006, "TheOneKEA" wrote:

And Oyster cards ARE valid everywhere within Greater London - just not
PAYG-only cards.

A PAYG Oyster doesn't work on suburban rail?

Only on the interavailable routes, of which there are few.

But weekly, monthly or other season tickets on an Oyster do?

Yup. Oyster travelcards are the same as magnetic travelcards; the
packaging is the only difference.