The Interview

Turn off your mobile or switch it to silent!
Wait until you are offered a chair before sitting. Sit upright in your chair. Look alert and interested at all times
If you’re asked if you would like a drink, settle for water. You never know if you might get a frog in your throat and a burning hot cup of coffee won’t help
Make sure that your good points come across to the interviewer in a factual, logical and sincere manner. Stress achievements
Give positive answers without any negatives attached
If you face a question which is a particularly tricky one, don't be afraid to take your time and think about your answer. One way to get more time is to ask the interviewer to repeat the question
Demonstrate your enthusiasm for the role - but don’t look desperate. Keep your answers concise and don’t ramble
When the interviewer has finished asking you questions, demonstrate your knowledge and interest in their firm by asking a few appropriate questions
It looks good if they can see that you are pro-active and have bothered to find out information about them
Always conduct yourself as if you are determined to get the job. Never close the door on an opportunity. It is better to be in a position where you can choose from a number of offers rather than only one

Be late. Ideally try to arrive 10 minutes early. Companies generally have corporate information in their reception area and this is a rich source of last minute memory-jogging information on the company
Smoke even if the employer smokes and offers you a cigarette
Chew gum or eat
Answer questions with just a simple "yes" or "no". Explain wherever possible but don't go off on a tangent
Waffle
Discuss personal information or make derogatory remarks about your existing employer
Be overbearing, overly aggressive, conceited, or leave the opinion that "you know it all"