If you've previously opted out of sharing your health data for planning and research purposes, by submitting a National Data Opt-out, you do not need to take any action. You will not be invited to take part in research by NHS England.
For everyone else, you can submit the form below if you do not want your child to be invited to take part in the CSOR programme.
More information can be found on the National Perinatal Epidemiology Unit's CSOR website.