Thanks for the great replies guys, what you've said has been really encouraging.

I am an undergrad in the US, and I still have the potential option of taking more summer courses and finishing my undergrad with a degree in comp sci, but I would rather pursue one of these masters courses and keep my BA the same. That being said, what are the admissions like? I don't want to end up not having any training in comp sci.

Thinking about doing a masters conversion course in computer science, wherever I can get in. I have a fine background in math, although I haven't complete more than calculus 1 (just because of the nature of my undergraduate degree). Has anyone done one of these? What were your experiences like? How difficult were the admissions?

Thanks