Don't just recap your CV. Use this chance to show all your qualities that a CV does not visualise.
Set up a Google Alert about the company to keep informed.
Make clear your career goals and why you would like this role.
Dress for the occasion. Dress stylish and tidy.
Arrive on time, so you're relaxed and prepared for the interview.
Don't brag too much. Humility is powerful.
Thank the interviewer(s) in person, by email or by post. Common courtesy and politeness really helps in interviewing.
Job Hunting Tips:
"Before you have the interview find about the employer. Get to know what the firm does, who their competitors are, and their principles. An interviewer will not listen to what you can offer if you don't understand how they do things."