Biomedical scientists conduct laboratory and scientific tests to support the diagnosis and treatment of disease.
Here is the NHS link : Biomedical scientists conduct laboratory and scientific tests to support the diagnosis and treatment of disease.
Also consider : https://www.wildlifetrusts.org/get-involved/citizen-science-projects
and https://www.csarochester.org/ and https://earthwatch.org.uk/blog/citizen-science-projects-in-the-uk-volunteer-to-help-nature/