Thank you!
That is very informative and the exact answer I was looking for. In fact, you also mentioned Cambridge, which is another target school for me, so you've killed 2 birds with one stone!
This is useful to know, since the more information that I can give to my references, the less surprises I have to worry about (already have 2 lined up, one of which is my current supervisor and the other being a project manager from a previous job).
Speaking of Cambridge, I read the application requirements on their website and it seems like they only require a single reference. Is that correct?
Thanks again for your help!