First round interview based on a pre-determined list of about 17 questions of the type 'tell me about a time when....' So many questions mean you need a lot of examples. Assessment centre featured relatively simple numerical and verbal reasoning tests but the written assessment was particularly time pressured with a lot of information to summarise. Best to plan a structure at the start and be rigid with the time you assign to each part. Final round interview with a partner- your motivations for joining EY and the particular business function, some discussion of trends in the service line I had applied to.