Since 1970, GAD has been responsible for providing an independent check on the randomness of the monthly premium bond prize draw (ERNIE) output.
Statistical tests are carried out to check that the generation of bond numbers is free from bias and that each eligible bond has an equal chance of winning a prize.
We are not involved in Premium Bond administration and any queries relating to administration issues should be referred to the National Savings & Investments Helpline on 0500 007 007. Alternatively, if you would like to make a Freedom of Information Act 200 request, please write to:
Freedom of Information Unit, National Savings and Investments, 1 Drummond Gate, London SW1V 2QX or e-mail: foi@nsandi.com. More information on making a request to NS&I is available on their website in the ‘About NS&I’ section.
National Savings & Investments provide a free tracing service to enable customers to be reunited with lost or forgotten savings and investments, including premium bonds. For more information see the Tracing Service page of the National Savings & Investments website.
We can also provide statistical analysis services to other public sector organisations.
Contact us
To discuss your requirements, please email enquiries@gad.gov.uk, or phone +44 (0)20 7211 2635.