Screening Services Wales  offers a range of services each having its own website.
Here you will find a wealth of information such as: What symptoms should I look for? Should I be screened? Am I eligible? Who do I contact? etc

See the sites at:

http://www.screenngservices.org.uk/asw/  (for Antenatal Screening)

http://www.wales.nhs.uk/sites3/home.cfm?orgid=747 (for Bowel Screening)

http://screeningservices.org.uk/btw/ (for Breast Screening)

http://www.screeningservices.org/csw (for Cervical Screening)

http://www.screeningservices.org.uk/nbhsw (for Newborn Hearing Screening)