We share your personal data with those external organisations we have contracted to either carry out our surveys, or send you mailings between each survey. NatCen Social Research was the independent research organisation that was contracted to carry out the Age 25 Survey, on behalf of the Centre for Longitudinal Studies at University College London. Kantar are conducting the COVID-19 Surveys. Copyprint UK carry out the mailings between each survey. These external organisations are contractually bound to UCL to keep your data safe and secure, and are accredited to data security standards. The organisations we contract to conduct surveys may appoint sub-contractors to send you letters, emails or text messages. Sub-contractors will always be contractually bound to comply with data protection law.