Thanks for the advice guys, main reason for changing my mind about a science degree is the intensity of the course, maths, the impersonal nature of the work afterwards and when i look at my science teachers I cringe at the thought of being like them! I've only realised recently that science however 'interesting' it may be jobs relating to it tend to be soul destroying. After doing a year of simple AS science i have found myself becoming more anti-social and critcal of all the non science people im around, it's like they don't see the bigger picture.
I want to change because i want a fun enjoyable life without thinking about the endless complexities of everything, i enjoyed critcal thinking and law at AS and i miss my old witty, confident self. Science has turned me into a boring person i want to revert!
Although if im good at it should i do a degree in it because i can? i've never been so confused in my life!