[Ithinkiloveyoutoo]

You'll be in a room. There might be 2-5 senior employees there to congratulate you all on the interview then they might talk a bit about the company, explain the role and what they expect from you. Then they will be group and individual exercises-For a John Lewis one I went to for example, with my group we had to design ideas for a promotion poster, had some numeracy tests and things like that.

Most of all they want to see how comfortable you are in the environment and how well you interact with people. So even if you don't know the answer find a way to be a voice they notice and remember whilst watching everyone.