Who – Know your interviewer, research their LinkedIn profile and fully research the company
Why – Specifically why do you want to work for the company and what stands our for you
What – What is your understanding of the role and how would you describe the role to the client?
Where – Do you know how to get there? Do you know the area? How far are they from the train station? Where will you park?
When – When is you interview? Give yourself plenty of time to get there. When will you schedule time to prepare properly?
How – How have you gone the extra mile with your preparation? i.e. Industry knowledge / Glassdoor review / Competitor information