Multiple stages. First a screening call with HR or current consultant. Then a teams video interview with a Senior Consultant who goes through your CV and motivations, with some questions about how you'd handle certain tasks/situations. e.g. What would you do if a client told you there was a problem. Describe your thought process. Second stage was a group interview where there was a mock case study with up to 4 other people. You have one hour to create a slide deck to present to two or more Consultants who act as the client. This is super variable and really depends on who you are put with - a find balance between railroading the team vs getting your point across.

Did an assessment on both intelligence and soft skills. Followed by two different 2 interviews, first one as a general check of background and motivation, second one focussed on skills including a consulting case