I can pretty much guarantee that if someone asked you how you were getting from A to B and you answered "coach", they would be 100% confident that you meant you were travelling in a road going coach.
Or flying, in the American equivalent of Economy Class
Back on topic, on-train beggars are by no means a new phenomenon on London's railways - but they seem to come and go in waves. I haven't seen any on the routes I travel recently. There used to be a couple of buskers who turned up from time to time be regulars on the trains my route. No doubt they varied their pitches to get different audiences and to stay ahead of the British Transport Police.
Oysterisation seems to have put paid to the market in used Travelcards - people asking for them were a very common occurrence.
The roving eastern european musicians are a bit of an earful, TBH. All that squeeze box, tambourines, whooping and foot banging... Jollity should not be permitted on the underground.
There's a group of 3 (or maybe 4) who I have encountered numerous times on various lines, including the various Subsurface railways and the Northern Line who are ridiculously irritating, and seemingly only have one song (When the Saints go Marching In). Provoked one of my favourite encounters on the Underground when, whilst holding their hats out for money, a fellow passenger remarked to them that "Busking on the Underground without a permit is illegal", which got the response from one of the clowns of "F*ck you, we provide entertainment and everyone loves us"....the passenger quite calmly retorted "Is that why you've received precisely no donations whatsoever then?"!! The band promptly left the train...
I was travelling passenger in uniform a couple of months back, a female tissue seller boarded and started putting tissues down, aiming to collect for them, I asked her to stop , she didn't so I followed her, picking up her tissues.
she got off at the next stop, I am now the proud owner of enough packs of tissues to last for the next six months