Leather briefcase found near Grand Opera House

I found a dark brown leather briefcase this afternoon around 4:15pm outside the Grand Opera House on Great Victoria Street, Belfast. It's a medium-sized case with a brass clasp and a small dent in the lower corner from a quick bump on the pavement. The inside lining is pale tan, and there’s a label with the initials 'L.K.' on a pocket plus a green A4 folder that seems to contain work documents. It's in decent condition, just a bit scuffed, and I figured the owner would really want it back—if this sounds like yours, tell me what's in the folder or the initials to confirm ownership.