There was some discussion around a month ago[1] about whether a NR
Railcard-discounted Oyster card could be used to get cheaper travel on
buses.
It just happened that my wanderings yesterday took me on some buses -
the first two were charged at £1.20, then the third was 95p - meaning
that I'd been capped at the z2-6 off-peak Railcard cap of £3.35,
rather than the £3.90 adult bus & tram cap.
This is contrary to the TfL website[2], which says "National Railcard
price capping discounts do not apply if you only travel by bus or
tram."
Which was nice.
[1] Message-ID: , in the thread
'Cannot get Railcard discount loaded on to Oyster' -
http://tinyurl.com/yc6y9ch
[2]
http://www.tfl.gov.uk/tickets/oyster...9261.aspx#rail