Went to assessment day in London offices, which comprised a number of tasks. First was a brief introduction on yourself. Then you questioned your partner before explaining to group why they would be perfect for their job. Then it was a group exercise. Following the group exercise some people went home and the rest of the group had to present themselves for 3 minutes and explain why they would be perfect for their job, before fielding questions.
Quite a laid back feeling to the day, which was nice.