I had to take the tube to our london office today. Went down onto the
platform. 1 minute later I realised I'd left something at home and
went out again. Luckily I always check the gates and noticed it had
deducted a quid! So much for the 15 min grace period mentioned on here
by others. The lady in the ticket office was nice enough to put it
back on the card but how many other people have been done by this?
What next , automatic deduction from bluetooth enabled cards as soon
as you walk in the station?? FFS.

B2003