Mizter T wrote:
Get an Oyster, use an Oyster, tell your friends and family to do the
same, or be a mug and pay the higher fares.

Get mugged when you buy an oyster from the theft that originates
1) When they oyster is deducted at the barrier, but the gates don't
open, you get "seek assistance", the gateline ****s force you to touch
the bi-directional paddel, and you have an unresolved journey which
means an annoying and expensive phone call, or a long queue at the only
window left open and hope that the guy is feeling generous enough to
give you your own money back that his company just stole.

2) When the line is suspended, and you exit the same station you just
entered

3) When the line is suspended, and tickets are valid on other routes.
Apart from the fact they aren't, as you have to pay when you get on the
bus