Applied online, received a phonetical within 3 hours and asked to attend interview at London office 4 days later. First round consisted of numerical test (relatively easy but no calculator), group introduction, and group business case. Second round with HR about CV. Third round with manager (motivations for MS, future career aspirations, talk me through your CV, easy mathematical brain teasers). Fourth round with partner, similar things, but easier and less in depth. Waiting to hear back to see if i have an offer.

Easy going, personable. You will do several rounds with many different levels of seniority. A mix of technical and general questions. You will meet managers, seniors, and a partner. Overall a great experience.