Other resources

ChemRxiv – preprint archive service for unpublished research in chemistry and related areas. Good for developing research areas but be aware that submitted work is not peer reviewed.
Chemistry Reference Resolver – includes browser extensions that can direct you to a publisher’s webpage to find a journal article. Good for incomplete citations.
ChEMBL– free resource for drug discovery
Dictionary of Drugs: up to date and concise information on currently marketed drugs, those undergoing clinical trials, and pharmacological tools, this is a one-stop resource for the medicinal chemist.
TOXNET– A resources for searching databases on toxicology, hazardous chemicals, environmental health and toxic releases.

Forensic Science Regulator: set up to make sure the provision of forensic science services across the criminal justice system is subject to appropriate scientific standards
Forensic Science Resources: good list of forensic science resources on the internet.
British Academic Forensic Sciences
Chartered Society of Forensic Sciences: the Professional body representing Forensic Sciences worldwide

The study of forensic science uses many reference works to define materials and procedures in the application of the discipline:

Fingermark Visualisation Manual (downloadable PDF file) an essential professional guide published by the Home Office Centre for Applied Science and Technology (CAST) and used across all UK police forces. This interactive pdf includes 1200 images and diagrams and details forensic fingermark recovery processes essential for students and professionals working in forensics.
Manual of Forensic Science: An International Survey – covers current trends and technology in many disciplines within forensic science including bloodstain pattern analysis, ballistics, forensic genetics and DNA, questioned documents and toxicology.