In my first class coach yesterday they were very pleasant and had a great sense of humour. Talked football all the way back and struggled to get over their lack of goals this season on the road. 2 both in one game!
Some upgraded when asked. Others refused to pay and had the police called out in force at Reading station on arrival.
However the train crew and manager were changed at Swindon so i imagine they avoided arrest.
Ever since I was 6 it has amused me that first class travel does not exist between Newport and Cardiff.