There was first a math based test in one of the interview rooms which was split into two questions. If you passed the maths test, you then moved onto the face to face interview, the total time was roughly an hour

Initial phonecall with the inhouse recruiter, online assessment, supervised excel assessment, interview with 2 senior members of the team, final interview (more of a conversation about career prospects) with director. Did not accept after weighing the benefits and cons