On a train back from Gloucester to Cardiff this evening - as we were approaching Newport from near the Freight yard, there were some teenagers, walking along the mainline!!
Immediately I alerted the conductor - he said "I'll see what the driver says". Went back in his cab - came out - "Drive says it's on the other side so we aren't going to do anything about it"
I said "You're not going to do ANYTHING about it?"
"Nope" he said.
I was stunned, and left with no choice - so I called British Transport Police on my mobile and told them about it.
Strangely, all trains came to a rather abrupt stop very shortly afterwards - causing some notable delays

Really, though - I could not believe the approach of those staff over something so safety critical.
Oh well - the departure boards in Cardiff were quite "interesting" to say the least, when I got in - good job nobody knows it was my fault or I wouldn't be popular
