A one hour online interview, followed by a 2nd one hour online interview, followed by a 45min face to face final interview at the office. A very long and disorganised process; I sometimes waited over 2 weeks after an interview before having to chase them to get responses, which I did by guessing people's emails as they don't give me contact details of the interviewers. After an 8 week process I was not offered the role, but invited to interview for another department. The second department were much more efficient but their questions were incredibly negative - I left the interview feeling bullied and decided I probably wouldn't take the job even if I was offered it based on my interview experience.
The whole process left the impression they couldn't care less about the experience of the candidates because they are such a popular company to work for.