Fines

[Jay71]

Train & bus companies fine people having invalid tickets or no tickets at.  The fines which these louts get is laughable.  If you pay the fine within a certain amount of time then the fine gets reduced. This is a pathetic system.  The lout should have seven days to pay the fine. If not paid within seven days then the fine should get doubled.  
When are train/bus companies going to start issuing fines for louts caught smoking? Fines should also be issued  for feet on seats 

[MW]

Train & bus companies fine people having invalid tickets or no tickets at.  The fines which these louts get is laughable.  If you pay the fine within a certain amount of time then the fine gets reduced. This is a pathetic system.  The lout should have seven days to pay the fine. If not paid within seven days then the fine should get doubled. 
When are train/bus companies going to start issuing fines for louts caught smoking? Fines should also be issued  for feet on seats

Are they enforceable?

[Jay71]

I think they're enforceable. I know somebody got fined by NX. Person refused to pay. Fine got doubled. The fine is now being paid with benefit deductions

[MW]

I think they're enforceable. I know somebody got fined by NX. Person refused to pay. Fine got doubled. The fine is now being paid with benefit deductions

What happens if you walk off?

[Jay71]

Bit hard to walk off a moving train.....NX sometime have PC Pig with them who can check addresses.  Can a bus inspector physically stop you from walking away?

[Tony]

Bit hard to walk off a moving train.....NX sometime have PC Pig with them who can check addresses.  Can a bus inspector physically stop you from walking away?

Less of that! 

[Wumpty]

Bit hard to walk off a moving train.....NX sometime have PC Pig with them who can check addresses.  Can a bus inspector physically stop you from walking away?

For a pathetic system, you've certainly got a very strange way to support the one person in the organisation that can legally enforce these fines.

Inspectors/revenue protection or transport staff cannot detain you or stop you from walking away. What they can do is call for a police officer (!) citing aggravated trespass as, by not paying a fare and trespassing, they are preventing them from  doing their job. 

Similar situations exist with civil enforcement officers who attempt to serve a civil enforcement on you for littering - it's civil, not criminal.