National Institute of Medical Herbalists (NIMH)
http://www.nimh.org.uk/

College of Practitioners of Phytotherapy

http://www.phytotherapists.org/

The National Association for Premenstrual Syndrome
http://www.pms.org.uk

The Herb Society
http://www.herbsociety.co.uk/

Mrs Grieve
http://www.botanical.com

Henriette’s Herbal Homepage
http://www.ibiblio.org/herbmed/

The Herb Research Foundation
http://www.herbs.org/

Iden Croft Herbs
http://www.herbs-uk.com/

Herbal Gardens
http://www.herbalgardens.com/

Chelsea Physic Gardens
http://www.chelseaphysicgarden.co.uk/