Make sure you know where you are going. Check the address in an A-Z or even better, do a dummy run a day or so in advance. That way you'll know exactly where you are going and how long it will take to get there. The last thing you want to do is arrive at your interview late and flustered because you got lost or didn't leave yourself enough time. The ideal time to arrive for an interview is between 5 and 10 minutes before the time of the interview itself. Anything longer and you will probably begin to feel uncomfortable waiting and get more nervous. Anything less and you risk being late - a definite no-no!