For something like Chambers or Legal 500, don’t use the student pages. Use the rankings. Then pick a particular practice area or sector you are interested in and then look at their profile for this area - for instance:
Baker McKenzie, Banking & Finance | Chambers UK Profile
Gain insights on the legal knowledge of Baker McKenzie in the practice area of Banking & Finance department and discover their rankings.chambers.com
This then lists some of the clients they have worked with and what specifically on, and this tends to be fairly high profile matters for it to be listed in the profile.
Thank you very much!