One advantage of using an agency is that they will have fully briefed you before the interview. If your consultant has a good relationship with the company they can also advise you on dress code, company ethos etc.
Research the company yourself, you will almost certainly be asked what you know about the company, if not make sure you slip your findings in somewhere!
Make sure you are familiar with your CV. You will be asked questions on it and may be asked for a verbal account of some or all of your experience. This tests your communication skills and verifies the accuracy of your CV.
Prepare some questions like: What are your current projects? What is your background? What are the long term prospects exist beyond this position? What are their short/long term plans? In general, people love talking about themselves! Also ask some direst questions on this role like: How many people are they interviewing? When will they be making a decision?
Make sure you prepare answers for some awkward questions by having some answers up your sleeve ie: Greatest achievements / Failures, Strengths/weaknesses etc.
Plan your journey - aim to arrive at least 15 minutes early (don’t be too early though).In case you do run late, make sure you have contact numbers for your recruitment consultant so they can notify the client.
While you are waiting to be seen, it sometimes helps to strike up a brief conversation with the receptionist.
Remember that your first meeting is your first and only chance to make a first-impression so use it wisely.
Open with a strong handshake, a confident verbal greeting, a smile and good eye contact.
Be prepared to answer or ask initial trivial questions about the weather, the journey or the news etc. It will break the ice and relax all parties... remember your interviewer may well be inexperienced or nervous at interviewing.
Ask questions early to establish the objectives and important areas.
Listen to the questions and try to work out what your interviewer wants to hear.
Answer questions in a full and focused way, don't digress but sell yourself.
If you are confused, unsure or do not know the answer, then say so, or ask for clarification.
Don't rush into answers, take time to think, use a pad to write reminders if you need to.
The Interview - Closing
Ensure you have said all you want to say and asked all you want to ask.
Re-enforce why you want this job above other possible jobs and why you are suited to the role; experience, strengths, commitment etc.
Ask about the next stage of the selection process and when you can expect feedback.
Don't be afraid to ask their opinion of yourself, how you faired and whether they think you could do the job.
Part confidently and amicably, with a sincere thank you, a good handshake and a smile
The Interview - Follow-up
Call your recruitment consultant immediately with your feedback and re-enforce your interest.
Learn your experience, get feedback about where you impressed or where you failed - It will help you next time!
Relax, be confident and be yourself.