asdf wrote:

Sounds like something went wrong during the out-of-station interchange
at KX. Did anything unusual happen as you went through the barriers
there?
No. I only stopped off at the booking office to check that the cap was
operating as the balance was going down quicker than I expected. That
would only have taken a couple of minutes.
I can only assume that the long journey to Brent X had an affect or the
swipe out didn't register but I usually pay very particular attention
to that.

Kevin