agree with above.
it can be a challenge to get in, but a sizeable design or ad agency is a very good start to a career.
I'll not repeat whats said above - only add if your looking for work in Scotland - its a very small industry, everyone seems to know (or has heard of) everyone - It can be a right gossip network! Getting a job in an established agency gets you into the network for free... whether you like it or not!
After getting my break as a lowly Mac Operator big ad agency every other job, freelance work or business I have started has been off the back of the contacts I now have in the industry.
One other thing, this is a personal view so others may disagree.. don't go into an interview with a Creative Director saying you know it all and your expecting a salary of £Xxxxxx - it's surprising how many grads do that!
Be keen and confident - but remember your looking for your way in - the dream job can and will come later.