Going on the pill

I have been with my boyfriend for 4 years, we are sexually active as of last year but I think it would be safer for me to go on the pill, however I don't want my parents to find out, also, I live in the UK and am unsure of where I can get it, and the last point, where do you hide it?! anyone here on the pill or in the same situation as me?? what have you all done?! xxxx