Problem is I am graduating this year.Very fair! I can safely say looking at our Liverpool associates they leave spot on time (some even a bit earlier). The only person staying late is a partner and even then, they're out by 6. Our London associates when I see them, seem to be working much later. WLB is definitely much better up north - but when big deals are involved then it can a bit skewed!
At least it gives you more time to research those firms and other firms in anticipation of their applications opening (usually around Sep or Oct) - best of luck for them, I am sure you'll do fine!
What firm are you at?