Her Majesty's Stationery Office. Acts of Parliament and Statutory Instruments- with a fairly good search facility. Health and Safety Executive. Lots of good stuff here on the HSE's site. Law Society Gazette.
Articles are searchable for subject matter.
Civil Procedure Rules. CPR updates, procedural case reports etc. The Times , law reports. You need to know the date you're looking for, goes back to 1996. Various UK legal information resources.