Guidelines International Network
An international not-for-profit association of organizations and individuals involved in clinical practice guidelines.
http://www.g-i-n.net
UK National Institute for Clinical Excellence (NICE) UK
http://www.nice.org.uk/page.aspx?o=20
Scottish Intercollegiate Guidelines Network (SIGN)
http://www.sign.ac.uk/
New Zealand Guidelines Group
http://www.nzgg.org.nz/index.cfm?screensize=1024&ScreenResSet=yes
Prodigy
http://www.prodigy.nhs.uk/ClinicalGuidance/ReleasedGuidance/GuidanceList.asp