Best Route to be accredited nail technician?

hi everyone, i want to become a nail tech, but im so confused on the ways you do it, i want to be able to legally work on clients, doing basics, acrylics etc and be accredited ( i presume you have to be accredited to legally work ) any tips would be brill, i am in derby/stoke area if you have to do a course? i dont want to do a online course cause ive heard its not as good