Hey! Happy to share my experience.
For
Clifford Chance the AC structure is a brief introduction, a written exercise (40 ish minutes) an interview (75 mins) and then a group exercise (30 mins)
In the written exercise there was a case study we had to read and address what the main issues surrounding the company were (ours was finance based and it was a company in financial difficulties looking to recover) and how they could navigate them. We had to write our responses in a business email and send off to a ‘colleague’.
Interview was with partner and senior associate. The questions were on competencies, motivations for law and CC, and the case study. It was about 70/75 mins. You don’t need to remember facts/figures as we had the info with us still.
Group task was another case study we had to read in small groups (think there were five per group), discuss and come to a unanimous decision on a related question. We had 2 mins each to present our ideas to the group and work as a team to come to a conclusion whilst a partner and senior associate sat in and observed/took notes.
Biggest tips would be try to integrate commercial awareness into your interview and written exercise. Focus on teamwork in the group exercise. Try to be as confident as you can with your strategy in the written exercise as that will help in your discussion in your interview too.
Good luck! Hope all goes well.