Statutes
Links to the full text of all UK Parliament Public General Acts (from 1988 onwards) and all Local Acts (from 1991 onwards) as they were originally enacted.
http://www.opsi.gov.uk/acts.htm
Statutory Instruments
Links to all published Statutory Instruments from 1987 onwards as they were originally enacted.
http://www.opsi.gov.uk/stat.htm
(These two websites show the statutes/statutory instruments in their original, unamended from. There are commercial organisations which offer subscriber services to access amended/consolidated legislation)
Office of Public Sector Information: New Legislation
New legislation for the UK, Northern Ireland, Scotland and Wales.
http://www.opsi.gov.uk/legislation/whatsnew.htm
Public Bills before Parliament 2006-07
Public bills currently before Parliament in the Commons, the Lords and Royal Assent.
http://www.parliament.the-stationery-office.co.uk/pa/pabills.htm