Research the company and role and develop a good understanding of what is required from you. Search for commonly asked interview questions and have some standard answers and anecdotes prepared. Make sure these answers help communicate the value you could bring to the role. Also prepare some questions to ask at the end of the interview. Plan your outfit and journey the evening before and make sure you account for any possible delays. If you are running late, make sure to call and notify.
Take any certificates, resume, bring a pen and paper. Ask lots of questions. Research the company.
Smart, neat and tidy attire and nice shoes.
As you would for any interview you attend