Would you need to swipe if you're just using a standard Travelcard
ticket?

If you have a magnetic Travelcard then you use it at gates where they
are working. Obviously you must show it on boarding a bus or present
it when requested if a DLR train captain or other revenue inspector
asks to see the ticket.


The point is that where, especially on NR stations, there is no
barrier or inspection it seems you need to remember to swipe an Oyster
card but not a Travelcard.

So, if there was a subsequent on-train inspection would the Oyster
card (with Travelcard) face a potential fraud offence, that would
never occur if you simply waved a traditional Travelcard.