Cambridge, LSE, UCL and Imperial (in order of preference, with Warwick next to UCL).
Oooh I see you went for all the London ones =p. I only applied to one london uni (UCL) because I thought Imperial looked... well not my cup of tea. I have no idea how I order any of my uni choices after Cambridge tho (Durham, UCL, Warwick, St Andrews).
EDIT: By the way, did it jsut come up on Track, or did they tell you be email? (I know some universities email first before updating Track several weeks later...)