No it hasn't got rid of the £3 cleaners, police are to busy with real crime, and it can be a hindrance, with council borders meaning you need more licenses.
But we have it so I try to use it to my advantage to sell my services. the police and councils do clamp downs now and then and it seems to help, but come spring the unlicensed guys appear again. I think it really depends on the council and much they enforce it, I suppose it vary's depending on area.