As described in the other interviews, a group discussion, a cv exercise, and a presentation. Travel costs weren't paid for, and the locations a bit difficult to get to.
Be very sure you want to work here before you apply, it's a very involved process, and in hindsight it seems like a job that would have ruined my health. Make sure you put as much effort as you can into the online application, they're looking for management experience (or at least things that show you think like a manager), decision making, and a head for business.