Fine art foundation is the best foundation course you can do in CSM. The works of your friend are good in quality, however, they are not amazing, talking about things critically, and he will really need to make his portolio and Personal Statement "perfect" before he sends the two off, especially since he cannot be at the interview. I would suggest that he demonstrates his ability to use a number of different media, such as oil paints for example, since so far there have been good watercolour works but nothing more. Photography will not interest the tutors that much, although it is a good plus, since it shows his diversity.
On a brighter note, I have seen students with far worse quality of work getting in.
The community, as far as I am aware has a high proportion of international students.
Best wishes