Assesment centre - 1 talk and 2 interviews.
Talk was about the firm and you get to hear from multiple partners. Make notes as they ask you about it later.
1st interview is about motivation - Why KR, why Audit, what do you want to do ACA or ACCA etc. They also ask what you made of the talks.
2nd interview is about competency - name me a time when you've done xyz.
Very friendly no need to stress.
They get back to you quickly (a couple days)