Mizter T wrote:
Oyster Extension Permit - an unwieldy device invented at the behest of
the TOCs - pax who have a *season* Travelcard loaded on their Oyster
card but want to go outside the zones covered by said Travelcard are
supposed to get one before they start their journey.

Thanks. I haven't been reading for a while, so I've now seen the recent
threads.

Theo