The interview was in 3 stages; an initial, light-hearted conversation with HR and then 2 further discussions. The 2nd was an in depth discussion about my work history and the final interview was a lengthy call, all based on 'tell me about a time' questions. The interviewers were all very polite and professional. The final interview was fairly challenging as it requires a lot of prep, but overall I found the process thorough and positive.