On Friday, 25 May 2012 17:39:59 UTC+1, Paul Scott wrote:

... However the law states that a PTT MUST be purchased if a normal
ticket cannot - yet it is now impossible to purchase a PTT. So either
new PTT machine must be provided or the law has to be changed. Its a
catch-22 for customers that cannot be acceptable. CJB.

Please cite this law you keep referring to.

The way you are going on and on about it you must have a copy available.

FWIW permit to travel machines are not mentioned at all in the penalty fare
regulations...

I'd like to see them as well.
It doesn't matter, though. In this case a ticket inspector should always issue a penalty fare which the punter will be happy to accept knowing that his appeal will be successful.