Two rounds of interviews, both first and final round split into two case study interviews: 1 structured with a booklet you have to digest quickly and answer questions on (usually a market sizing evolving into a strategy discussion), the second being an unstructured case centred around synergies in a merger, entering a new market etc. Also numerical and non-verbal reasoning tests in first round of interviews which are considerably harder than the online ones. Personally found the first round very straightforward but the cases in the final round were more challenging and tripped me up.