British Lyme Disease Foundation - Mark Greenfield is a sufferer of Lyme disease and has a useful single page site with information and links.
Group B Strep Support - Charity set up to help families whose babies have been affected and to raise awareness of the problem. Brief, clear information is provided.
Herpes Viruses Association - Information and advice on herpes simplex from the charity formed by patients themselves. Helpline number, membership details. Also shingles information pack.