Grey Literature is in the most basic sense a document which has been produced but not been offically published. For instance, an NHS trust policy for internal use or government, academics and pharmaceutical document not offically published.
If you are searching for Grey Literature you are by its nature looking for documents which aren’t necessarily easy to find!
Try some of these resources, but also try to think…are there any communities online who would share practices or in house guidelines?
Do you have any other suggestions on places to look for Grey Literature? Comment below if you do….