thank you very much for your help!
for your side question, the rest of my gcse grades aren't the best as they are sitting at 3s, 4s and 5s. i managed to get a 4 in maths and a 5 in english, and most of the A Level courses at my college require 5s in maths. furthermore, if i were to do A Level art, wouldn't i have to choose 2 more subjects? i'm not confident that i will do well in other subjects as i have little to no interest in them, and i don't want to end up failing because of this. my backup sixth form options are Art, Business and Psychology but realistically i don't see the point in taking these if i know i wont get top marks