Here are some links you may find useful.

Piatkus - www.piatkus.co.uk
Infertility Network UK - www.infertilitynetworkuk.com
Human Fertilisation and Embryology Authority - www.hfea.gov.uk
Donor Conception Network - www.dcnetwork.org
British Infertility Counselling Association - www.bica.net
Assisted Conception Babies - support after successful treatment - www.acebabes.co.uk
The Multiple Births Foundation - www.multiplebirths.org.uk
National Gamete Donation Trust - www.ngdt.co.uk
Verity (Polycystic Ovary Syndrome Support Group) - www.verity-pcos.org.uk
The Miscarriage Association - www.miscarriageassociation.org.uk