The process took 2 days. I interviewed at BDO in Jan 2011
Interview
The graduate recruitment process consisted of a 1:1 interview with a director followed by assessment centre when successful. Assessment centre consisted of logical reasoning test, group exercise (case study), presentation on the group exercise and an interview with a partner. There was also a chance for lunchtime networking with recent graduates.
The people were friendly, and made sure you were very relaxed. For the group exercise we were given an hour, and then another hour to prepare for the presentation, so we were never drastically pressed for time, although there is the obvious pressure of being observed while you discuss as part of a group.
The partner interview was very informal, we just discussed what the role would be like, as well as the usual "Why BDO", "Why this department" etc.
The people were friendly at all levels, from executive to partner, and there seemed to be a good rapport and many social events taking place among the graduates. Overall a useful experience.