The Institute of Biomedical Science is the professional body for Biomedical Scientists (BMS) in all fields of work, including Biomedical Scientists in the National Health Service and related services in the United Kingdom and Ireland. Its aims are to promote and develop biomedical science and its practitioners and to establish, improve and maintain professional standards.

Also see 'What is a Biomedical Scientist ?' on this site 
The Health Professions Council  has been set up to safeguard the
health and well being of patients using the services of the professions
it regulates and to ensure that the public has access to, and are
treated by, health professionals who are qualified and competent.
The Federation for Healthcare Science
A united voice for Science in the U.K. Health Service


Links to other professional bodies :-


The Association of Clinical Pathologists. The Association of Clinical Biochemists
The Royal College of Pathologists The Institute of Health Service Management