How did the assessment centre go? what was the case study about?
The case study ain't even hard. You don't even need to prepare for it as they give you prepping time for it. I was so good at mine but ended up getting rejected because according to them i was too firm on my opinions even though I led every talk and invited others too speak.
They are quite picky in my opinion. It's worth trying but they were a plan c for me anyway. Good luck