BPS Statement on Psychometric Evidence
British Psychological Society, 2008 

URL: http://www.psychtesting.org.uk/download$.cfm?file_uuid=129EFC6E-1143-DFD0-7EE6-EBC6BD530F11&siteName=ptc

[from the web]
This statement sets out guidance to psychologists and other users of psychological tests concerning obligations when providing evidence or opinion, which rests on the results of psychometric testing.