Can you give me any tips regarding the case study interview?

Hi
Thank you very much for your question.
My advice for the final interview stage of the application process would be to make sure that you give yourself enough time to prepare.
Make sure that you research your topic thoroughly and that you can expand on anything that you mention - you may be asked questions on something that you have said, so it is important that you can show you know what you are talking about.
I would also advise reading the news in the few days prior to your interview, to make sure you don't miss anything topical that you could talk about.
However, a general piece of advice would be to make sure that you enjoy the interview! Use it to ask your interviewer any questions that you would like to know, that aren't specifically on the website.