Previous "guest": I have never hidden behind my name here and my address and full name have appeared more than once. You have the damned rudeness to insult people you know nothing about without even giving yourself a name which can be identified with other posts.
On the subject of the law, it's authority on whether an activity is begging or not is pretty questionable anyway. In reality, busking is either restricted or not restricted by a complicated array of different laws. Licensed pitches exist in very few places and they are very rarely profitable. That is the case in the UK, in Germany and in most other European countries. I will let our American colleagues speak for themselves.