Courts & legal
Jersey Legal Information Board (jerseylaw.je)
Free access to Jersey judgments, consolidated legislation and the Royal Court's decisions.
Judgments are full text and searchable, which makes this one of the richest free sources on Jersey structures and the people behind them.
Litigation is where ownership disputes, trust arrangements and the identities behind structures tend to become public. A full-text judgment search will often produce material that no register will give you.
Consolidated legislation is here too, and is the right citation to use rather than a commercial reproduction.