Company Information: You can look up the names, contact information and directors of New Zealand companies using the NZ Companies Office Database. More information on selected New Zealand companies is available from D&B reports. New Zealand securities filings are available from the University of New South Wales (back in 1994, the contact person was Mary McDonnell at email@example.com or 61-2-931-9391.)
See also the separate entry for "Company Information" and "Doing Business in Foreign Companies."
Legal Materials: Kiwi statutes, case law abstracts, etc., are available at The Knowledge Basket. For recent Acts, Bills and Regulations go straight to the official New Zealand Legislation site
For a summary of New Zealand law, Laws of New Zealand (LexisNexis/Butterworths) is a 40+ volume legal encyclopedia. Laws of New Zealand is available on Lexis (NZ;LONZ or NZ;LONTOC for the Table of Contents).
Lexis also has cases from the New Zealand Law Reports (NZ;NZLR) back to 1958, District Court Reports (NZ;DCR) back to 1997, Administrative Reports (NZ;NZAR) back to 1997, Family Law Reports (NZ;NZFLR) back to October 1981 and Management Appeals (NZ;NZRMA) back to 1991 -- and a combined cases database (NZ;NZCAS). You can also get Butterworths Current Law (NZ;NZCL) and Butterworths Current Law Digest (NZ;CLD).
For more information about New Zealand legal materials, see Margaret Greville's An Overview of New Zealand Law & Sources of Legal Information.
See also "Foreign Laws."