Applied in the summer recruitment campaign, where there are fewer job roles on offer, and I assume fewer interview spots are given. CV and cover letter sent online, received an email inviting to interview within a couple of weeks. All interviews took place at the London office (which is really nice!). First round: - Numerical test, very similar to GMAT numerical questions. The questions aren't that difficult, but the time pressure makes this quite tough. - Case study on laptop, multiple choice questions based on a fictional case. Most of these are about drawing info from graphs and tables, and doing longer calculations than in the numerical test. Tough to prepare, just go and give it a shot. - 1 x interview with Project Leader. Standard format, 15 minutes personal experience questions talking about motivation and past experience. 20 minutes case interview. 5-10 minutes questions for the interviewer. If you've prepared well enough for case style interviewing, then the case won't surprise. I found that I was given a lot of detail, seeing the root of the problem was quite difficult, and there were many factors to think about. The cases were usually based on a real project that the interviewer had worked on previously, so they know the case inside out! In the first round, I was given a falling profits/market share case. NOTE: I was told that getting through to the second round is based on your performance in the case interview and CV/cover letter. The test results are used to discriminate between Maybe candidates. Second round: - 2 x Project leader/Principal interviews. Exactly the same format as in the first round. Final round: - 3 x Partner interviews. Same format again, although one of my interviews was almost completely calculations based, I found this really tough. Partners definitely expect you to lead the case more, they don't seem to give much guidance along the way - they want you to own the business problem like a real consultant would. Notes: I was told that the hiring decision is not based purely on your final round performance. Partners do consider the feedback from interviewers in the previous rounds. I've interviewed at a few top consulting firms, and BCG interviewers stood out for how friendly and welcoming they were. When you're answering the personal experience questions, you get a real sense that the interviewer is genuinely interested in getting to know you properly. The recruiting staff are incredibly welcoming and helpful, they really calmed my nerves in the waiting room, and were quick to respond with a decision. Partners give their decision on the same day. Top tip: When you're planning your kick off or doing calculations, get it all down on paper, it really helps you communicate your line of thinking. Make some recommendations at the end of your case before you're asked to. Really try to own the case and lead it, treat the interviewer as a real client, don't expect them to guide you along.