Warwick University or Kings College London Watch
The entry requirements for computer science (albeit bachelors):
KCL: AAB at a level
This suggests the computer science department at Warwick takes "brighter" students and is more academically demanding.
The position quoted in KCL prospectus is 8th for CS (2012)
Warwick have been ranked consistently in the top 5
This suggests that Warwick has a better reputation as a university for CS
I am unsure as to job prospects however I know that Warwick has rates and top students are offered places at large firms. It would be understandable of KCL grads earnt more as they are more likely to work in London which pays much higher.
However you have to balance this with the higher living costs for your degree if you study in London (up to double the price) and how this may offset any small difference in average starting salary.
Again they are both respected, Russell group universities and it is up to you as to which you pick.
Personally I sway to Warwick: I like the idea of a community like campus-based university vs a spread out and less friendly city. I also know living costs will be cheaper in Warwick than London and that's something that I would factor in. Warwicks CS department is older (I think) and therefore more developed and respected, certainly from the comprehensive research I have completed. I will not lie, I'm aiming fir a "top" university and when I search for top CS universities it is rare that KCL is present in the lists. However it must be your interpretation (type of campus, living costs, modules offered, opportunities provided, social life etc) of the universities which is at the fore.
Both are respected, some subjects are better at either but I would choose Warwick.
I finally firmed Warwick