In message , at 14:59:06 on Sat, 2 Jan 2016,
" remarked:

What time did this occur? I used the tube yesterday without any
difficulties, though I was using contactless.

Contactless was unaffected.

What are the stats, BTW, on contactless replacing Oyster?

Dunno; it would be good to get some numbers.

I assume this applies mainly to PAYG - I don't think you can load a
Travelcard Season onto a contactless CC.
--
Roland Perry