when you say you have done a week of A-levels, do you mean youve done your first week of college (AS) or that you have started the A2 year?
if your in tour second year then you think about your courses for uni now! if your first year then think about them over the year...... if you want to do physics speak to your tutor and ask if you can take a 5th subject but you have a reasonably versitile selection of subject however there is no science based subject (bio, chem, phy, psych, socio, maths) if you do not want a career involving these subjects you wond need to do a degree in them.....
Do you have any idea what course at uni you want to do?
YOU say you like creative studies but what would that be at uni?