Beggers , and indeed awful buskers on trains are a long standing issue - the worst were the Romanian baby clutching ones on the tube (but that was dealt with firmly by the BTP to be fair) - I used to , back in the day move them on and off the train , and message out their activities.
Once referred to as a "fascist" by some (presumably) Hampstead Heath living liberal , before I could reply to her , I was supported by the rest of the carriage - who told her where she could take her "liberal" views.
You even get beggers here in Herts in places like Sainsbury car parks - offering them an apple from your shopping does the trick usually...