Universities 

First step is to make use of a course finder. This a great way to search multiple universities quickly. I have provided links below to the main course searchers. 

Once you have a clear idea of the course you want to do, You should take time to read the modules each courses provides. I also recommend ordering a prospectus to any universities you like the look of. 

The final stage before applying is narrowing down your options to between 5-10 courses and going to open days to see the universities you like the most in person (this can make a big impact on your decision)