Publication of Base Prospectus

The following Base Prospectus, prepared in connection with the update of the U.S.$20,000,000,000 Senior Preferred, Senior Non-Preferred and Subordinated Medium-Term Note Programme established by Nationwide Building Society, has been approved by the Financial Conduct Authority and is available for viewing:

Nationwide Building Society*

Base Prospectus dated 7 January 2021, prepared in connection with the update of the U.S.$20,000,000,000 Senior Preferred, Senior Non-Preferred and Subordinated Medium-Term Note Programme established by Nationwide Building Society.

To view the full document, please paste the following URL into the address bar of your browser:

http://www.rns-pdf.londonstockexchange.com/rns/9551K_1-2021-1-7.pdf

A copy of the above document has also been submitted to the National Storage Mechanism and will shortly be available for inspection at: https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

For further information, please contact

Nationwide Building Society

Carly Thomas

Investor Relations & Sustainable Finance Lead

Telephone: +44 (0) 7464 491600

Email: Carly.Thomas@nationwide.co.uk

* LEI: 549300XFX12G42QIKN82

DISCLAIMER - INTENDED ADDRESSEES

MiFID II professionals/ECPs only/No EEA PRIIPs KID

UK MiFIR professionals/ECPs only/No UK PRIIPs KID

Please note that the information contained in the Base Prospectus may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Base Prospectus) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Base Prospectus is not addressed. Prior to relying on the information contained in the Base Prospectus you must ascertain from the Base Prospectus whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.