Hi all I'm currently on an documentary assignment where I have chosen to do it on the different aspects of street life, I will be taking photographs of street performers/entertainers, stall workers in markets, and the homeless, which is why I'm asking this question. I don't know if I should just walk up to them (the homeless) and take a photograph, or ask them, or offer them a bit of money in exchange for a photo. I will be mainly doing these photographs in London. I ask this as I know that the homeless can vary in friendlyness if you get what I mean. Any suggestions/help is greatly appreciated. Thanks Edit: Also, sorry if this is in the wrong section, couldn't think of where to put this.