Institution of Civil Engineers
http://www.ice.org.uk/homepage/index.asp
Offshore Engineering Society
The Association of Geotechnical and Geoenvironmental Specialists (AGS)
http://www.ags.org.uk/site/home/index.cfm
British Drillers Association (BDA)
www.britishdrillingassociation.co.uk
Federation of Piling Specialists (FPS)
Coal Authority
The Ground Forum
http://www.ground-forum.org.uk/members/members.htm