• Once seated, get comfortable: e.g. if it's hot. Ask if you can take your jacket off. This will ensure that you won't fidget throughout the interview.
• Don't be put off by the interviewer. Sometimes interview techniques can appear very formal or unfriendly. If there are two interviewers they may play a 'good cop - bad cop' routine. Also note that in larger companies interviews are sometimes firstly conducted by people from other departments who you may not be working with.
• Listen carefully to the questions and wait for the interviewer to finish; don't interrupt. If you haven't understood the question properly, ask the interviewer for further clarification. Answer as fully as possible.
• Always be positive and enthusiastic. Don't speak negatively or moan about past employers or people from work. Also, don't lie about anything - you might not look convincing and if you are checked up on and caught out, it will cost you the job.
• Be confident at the interview, as this will give the interviewer a good overall impression of yourself.
• Keep looking the interviewer in the eyes: it helps you pay attention to exactly what's been said and asked, and it also shows confidence.
• Show personality - the interviewer has already seen your qualifications and experience on your CV, they have called you for an interview to meet you and assess your personality. Thus, show that you are keen, enthusiastic and interested in the position and company. People recruit people they like, sometimes even if they haven't got the right experience
• Don't come away from the interview unsure of anything to do with the position, e.g. what the main responsibilities and duties are; who you'd be reporting to; where the position fits into the department/company etc. It's perfectly okay to ask these kinds of questions and will make you look keen and serious about the position.