Does anyone work in GLV, TPR or any other good English Training Centres?

Hi, I just want to take a spoken English program which can help me use my English on a regular basis. I learnt English in University and i don't want to lose it, since i don't use it so often at work now.
However, my problem is i have a irregular working hours which cannot permits me to have a scheduled training program. So my idea is i can buy a total of certain number of sessions which can allow me to go there at night whenever im free.
By the way, i am only searching on a chance to practice my spoken English and i have worked as a translator for the last three years. is anyone here can help me out of this situation? Great thanks!