1 Phone Interview with HR Personnel - Quite a nice, relaxed chat with questions about my understanding of the role, me as a person and why I believe to be a good fit for this role. Very standard "Name me a time you had to work in a team..." type excersises 2 Assessment Centres in London, each with 3 one on one interviews. In the first round the interviews was with more junior staff and involved one standard interview about the role and me as a person, a role play where I had to pretend to call a prospective member to join the GLG network and a case study of the research work. In the second round the 3 interviews were with more senior staff and regarded me as a person and my suitability to the company

Pretty straightforward. Couple phone interviews and a case study. Do your homework on the business model and what they do. Interviewers were respectful and responsive. Frankly, it was a very quick interview process and they didn't waste your time.