Can you use an "out-boundary" travelcard the "wrong way" around?
eg. using a Gatwick Airport to Zone 1-6 day travelcard:
can I use that to accompany somone to GTW from NWD (in zone 4), and then return from GTW and use the Z1-6 part for the rest of the day, or must I use the GTW to Z1-6 journey before the Z1-6 to GTW journey?
eg. using a Gatwick Airport to Zone 1-6 day travelcard:
can I use that to accompany somone to GTW from NWD (in zone 4), and then return from GTW and use the Z1-6 part for the rest of the day, or must I use the GTW to Z1-6 journey before the Z1-6 to GTW journey?