In order to open an e-Bond you must already hold one Nationwide FlexAccount, click the link below to find out more and apply online:
FlexAccount - The current account that gives you more, with no monthly fee
Alternatively, you might be interested in a Fixed Rate Bond. You can apply for a Fixed Rate Bond by calling 0800 028 1667 Monday - Friday 8am - 8pm or Saturday 9am - 5pm.