Hong Kong was a somewhat autonomous city-state under British control until July 1, 1997, when the city was returned to China.
Company Information: Profiles of Hong Kong companies are available through Lexis (COMPNY;WBCHHK) and SkyMinder and Tolfin. You can obtain company filings from the Hong Kong Companies Registry's Cyber Search Centre.
Legal materials: The Laws of Hong Kong are posted free, in English, by the Hong Kong government, with a subject index, in the Bilingual Laws Information System. Ordinances, regulations, judicial opinions and arbitration decisions are posted free, in English, by the Hong Kong Legal Information Institute.
The Laws of Hong Kong are searchable on Lexis (COMLAW;HKLAWS), as are the Annotated Ordinances of Hong Kong (HKCHNA;AOHK).
For a detailed discussion of Hong Kong law, see Halsbury's Laws of Hong Kong (Lexis/Butterworth's), multi-volume legal encyclopedia. Check Worldcat to find libraries holding Halsbury's, or use it through on Lexis (HKCHNA;HLHKTC for the Table of Contents or HKCHNA;HLHK to search).
For more on Hong Kong legal research, see Legal Research Guide: Hong Kong and Guide to Online Law: Hong Kong by the Library of Congress and/or "One Country, Two Systems" of Legal the Research: A Brief Guide to Finding the Law of China's Hong Kong Special Administrative Region by Sergio Stone & Roy L. Sturgeon. For help with terminology, see The English-Chinese Glossary of Legal Terms by the Law Drafting Division of Hong Kong's Department of Justice. For more legal resources, see "China" and "Foreign Laws."
Judicial Opinions: Recent judicial opinions are posted free by the Hong Kong Legal Information Institute. Lexis has Hong Kong cases from various courts back to 1947 (HKALL). Westlaw has Hong Kong cases from the Hong Kong Law Reports back to 1905 (HK-RPTS-DIGEST), as well as the Hong Kong Latest Judgment Alert Service (HK-LJAS) and the Hong Kong Case Digests, which summarizes decisions back to 1985 from the Hong Kong regional courts and the Privy Council of Great Britain (HK-DIGEST). Or you can search all Hong Kong cases simultaneously in the Hong Kong Cases database (HK-CS-ALL).