My first ever assessment centre. Reasonably organised. Assessment centre consisted of firstly a group assessment where we were given statistics on manufacturing/prices/model popularity etc. About different car models. Each member had a car model and the team needed to decide whos should be picked. This was difficult for me because there is LOTS of information there, and in total there were 9 memebers, so arguing which model to choose became competitive quickly.
Next was an in tray exercise (multiple choice) with 2 maths questions based on buying 2 typss of the same stuff from different suppliers, which is cheaper..
Last was Interview.