Here are some other useful websites providing information for businesses on occupational health:

www.dwp.gov.uk/health-work-and-well-being
https://www.nhs.uk/live-well/healthy-body/
www.nhs.uk/change4life
www.acas.org.uk/index.aspx?articleid=1361
http://www.hse.gov.uk/
http://www.mind.org.uk/
http://www.bhf.org.uk/