first round interview was conducted through telephone, a so-call 'introductory chat', 15 mins or so, asking very basic background question and why you think you fit in to this role. second round telephone was a bit long, 45 mins. both telephone interviews are conducted by people on the desk, (so no interview from hr). third stage was the assessment center, consisting of a presentation to a business representative and group discussion. i was stopped at this stage and heard that there was still a final round following this.