Allergy related websites:

The British Allergy Foundation (Allergy UK)
http://www.allergyuk.org/

The Food Allergy & Anaphylaxis Alliance (FAAN)

http://www.foodallergy.org

The Asthma and Allergy Foundation of America (AAFA)
http://www.aafa.org/

Allergy & Asthma network - mothers of Asthmatics
http://www.aanma.org/

Global Overview of Food Allergy (GLOFAL)

http://www.glofal.org/

Pollen Calender

http://www.hon.ch/Library/Theme/Allergy/Glossary/calendar.html

Asthma, COPD and other respiratory diseases related websites:

The European Federation of Allergy and Airways Diseases Patients Associations (EFA)
http://www.efanet.org

The National Asthma Campaign
http://www.asthma.org.uk/

International Coalition of COPD Organisations (ICC)
http://www.internationalcopd.org/

The Asthma and Allergy Foundation of America (AAFA)
http://www.aafa.org/

The Federazione Italiana delle Associazoni
http://www.federasma.org/

Eczema related websites:

The National Eczema Society
http://www.eczema.org/

Serena related websites:

http://www.knowyourairforhealth.eu/

http://www.duitsverkeersbureau.nl

http://www.belgie-toerisme.be

http://www.toerismevlaanderen.nl

http://www.visitbritain.nl/

http://www.spain.info

http://www.debeterewereld.nl/

http://www.cleanairnederland.nl/

Webbuilding related websites:

http://www.effect-ict.nl/

http://www.patricialenten.nl/