This section of the Sierra Leone Web provides the full texts of Acts. These appear to be fairly complete from the 1970s onwards: there are large gaps before then. The earliest law is from 1926.
SierraLII (Sierra Leone Legal Information Institute) is a legal gateway site which subscribes to the principles of the Free Access to Law Movement. It provides access to selected judgments of the Supreme Court, 1973 onwards, Court of Appeal, 1998 onwards, High Court, 1992 onwards and Special Court for Sierra Leone, 2004 onwards. Also provided are Consolidated Acts, which may also be displayed by year of enactment, and and Statutory Instruments 2003 onwards (very incomplete).