Goldsmiths and Royal Holloway - will having only 3 AS levels be a huge disadvantage.

If the course require a pass in a 4th AS level, pick one up in your A-level year. Btw, Royal Holloway isn't in London, it's in Egham, Surrey.

haha shows you the extent of how informed i am .. My geography of England is poor.. ( i'm from northern ireland) :\ if i'm honest i'm totally lost as to what i'm doing when it comes to September and teachers pressuring us to make choices by results in summer. I've no idea how to choose where to go