I applied online. The process took 2 weeks. I interviewed at Boston Consulting Group (London, England) in Apr 2022
Interview
Was basic but they didn't ask about market sizing. They asked questions about profit margins and expected a lot of mathematical calculations. The interviewer was friendly and helped me through th process.
One interview, including a case and a behavioural section. Not too difficult, and interviewer will help you through it if you struggle. Basic behavioural questions, including about consulting and about the firm itself.