Written exercise then two interviews. The first a chat about competencies, your experience and CV; the second about a business case study you read 10 minutes beforehand. The first interview is easy to prepare for - basic interview prep, strengths, weaknesses etc.; the second is harder to prep for because you don't know what case study you'll get. It will be business-focused (mine was about franchisers and franchisees) so understanding business news, business models and how different businesses work / the issues they face will be important.