Applying to UCL with mediocre GCSE's for urban planning?

I got 4 A's, 4 B's and 3 C's for GCSE's and I take Geography, English Lit and Economics for A level if i get the ABB grade offer at AS will that be enough to get an offer from such a top uni? I know these grades would be laughable at competitive courses such as Law which is what I was initially hoping to do but is the any hope for a less competetive cours like urban planning?

Do you mean ABB at AS or at A level? I'm currently holding an offer for Urban Planning at UCL so I can give a general outline of what you need. You need a minimum of ABB at A level, as well as a further pass in an AS level. Regarding GCSE's you just need C's in English, Maths and a MFL subject if possible. I wouldn't just choose Urban Planning for the sake of going to UCL though, try to choose a course that you have a passion for. Good luck!