Tim Roll-Pickering wrote:
MIG wrote:

In another thread, someone posted the result of an FOI request, which
included a TfL staff briefing, which included this statement.

"An Oyster Extension Permit is only needed when a journey is started
within the zones covered by a Travelcard at a LU/London Overground or
DLR station and involves travel by National Rail beyond its
validity."

What happens at the joint stations like Stratford or Richmond? Is
there a consistent rule or does the passenger have to know how the
station has been designated?

That statement above is probably wrong. It is a staff briefing note for TfL
staff. The public instructions are different as I've just posted in a reply
to MIG...

Paul S