In message , at 17:40:12 on Wed, 23 Sep
2015, Mizter T remarked:

Like many I use contactless or Oyster almost all the time now - though
a Network Railcard discounted Day Travelcard can be useful

If I use my Railcard then an off-peak Travelcard from where I live
breaks even at between two and three tube trips. I bought one today, and
then travelled three legs in London, so probably it was worth it. As
insurance if nothing else.
--
Roland Perry