Can I change my permissions?

You can withdraw your permission to add information from your administrative records at any time, without giving us a reason. If we have already added some of your information, it will continue to be used for research purposes only, however, we will not add any further information from your records. 

To change your permissions, please email the CNC team at or write to: Child of the New Century, Centre for Longitudinal Studies, UCL Social Research Institute, 20 Bedford Way, London, WC1H 0AL.

Please note that opting out of having your records added to the national GP database, or of any other health database, via the NHS national data opt out, is separate to opting out of us adding your health records to your survey data. If you have previously given CNC permission to add your health records to your survey data, then we will continue to do this. But if you don’t want this to happen, please let us know using the contact details above.