"the big man" has been charged with assault and the youth "has been reported under Section 38 of the Criminal justice and Licensing Act Scotland, and in connection with an allegation of trespass".

If the law had been allowed to deal with this in the first place then nobody would be on an assault charge.

I wonder what guidelines conductors have. How many times they are required to ask for a ticket before they move onto asking someone to leave the train and how many of those before they are required to radio for assistance from the railway police. I suppose if people travelling on the railways are made aware of these things then there isn't the same temptation to interfere.