Briefly explain workplace ( health & safety & welfare) regulations?

Answer
The law says: employers have to look after the health and safety of their employees; employees and the self-employed have to look after their own health and safety; and all have to take care of the health and safety of others, for example, members of the public who may be affected by their work activity. this web site might help:http://www.hse.gov.uk/foi/about.htm