wrote in message news
No, you presume wrong - Roland's referring to buying one from one
of the online rail booking systems (tickets for which can be
collected from National Rail ticket machines which are hooked into
the system). Given that you can buy one from an NR ticket machine
anyway, there's no real need to buy it online.

An in-London travelcard? I can't get a Day Travelcard to and from London
because I'm not coming back the same day. I did look at a TOC site and
couldn't see how to buy an in-London day travelcard. They only offer
tickets between destinations.

If you search for a journey between any two random stations in London, it
should give an in-boundary travelcard as one of the fare options.

Peter Smyth