Originally Posted by shekie
I hang onto mine... of course I'm over about once a month. I have no idea how long they'd be good for if left completely idle... my guess would be indefinate, but... <shrug>.
Unlike tickets in the US (NYC, Chicago, DC), there is no expiry date.
"No, Pre Pay does not have an expiry date, it will simply remain on your card until you are ready to use it again"
More information at:
http://www.tfl.gov.uk/tfl/fares-tick...er/general.asp
If you register your card and lose it they can sort out your credits.