As in free time? You would roughly get the same amount of contact hours as anyone else in your year. I studied Psychology with Clinical Psychology, and it just works out as going to a different module once or twice a week compared to those just doing straight Psychology (i.e. while those doing straight Psych went to 'current issues and debates' in first year, I went to 'foundations of clinical psych').
If you're doing a joint honours course (i.e. Psychology AND Criminology, rather than Psychology WITH Criminology) I'd imagine that you'd have to attend more lectures than your peers doing a single honours course, but that's not something that I know much about. Either way, it usually works out that you get a lot of free time in first year and then progressively get less and less as time goes on.