Random street performances are risky.
In the UK you are liable for any accidents, damages or injuries that can be attributed to you act.
People are generally busy and untrusting of strangers so you are likely to get told to go away (or worse).
Also filming people opens another “can of worms” and you could end up with your camera getting smashed up (as well as you).
If you want a venue that will be conducive to you doing magic, try these ideas.
1. If you are old enough, a bar is good. Often the manager will be ok with this if you ask permission and don’t cause any problems. I did this at a local bar and now I get free every time of go there. I also got a gig for the bouncer’s daughter’s birthday party and an offer to perform in London on New Year’s eve at a top night-club.
2. If you are too young to go to bars, look out for local and charity events and volunteer. The organisers will be very happy for you to help and you will have an appreciative audience. You might even get into the local paper and also get a written reference (which is very good to have). You will also be helping others too.