Read through the job specification material, pay attention to the skills and competencies required and think of a few examples to link your experience to the required skills.
Visit the company website and familiarise yourself with their business and vision.
Prepare your interview outfit, look clean and smart. Make sure you know where the interview is taking place, plan your route and leave in plenty of time.
Have a copy of your CV with you in a neat folder.
Consider in advance your reasons for leaving previous roles or gaps in employment, it is better not to denigrate any past employment if possible.
Keep positive body language, ie, handshake, sitting forward, eye contact and active listening.
Give yourself time to digest the interview questions, answer as clearly as possible, perhaps with an example if required.
Prepare in advance at least 5 questions so that if 1 or 2 are covered during the interview, you have a back-up.
Try not to ask about salary/package, perhaps ask about the day to day role, company culture, or the next steps and feedback process.