You can download a form for an Investment Account at the National Savings and Investment website.
The Investment Account is a passbook savings account that offers tiered rates of interest, so the more you invest the better the rate you earn.
The passbook allows you to keep track of your savings and gives you access to your cash without notice and without penalty. You can save via your local Post Office branch, by post or by standing order.
To apply you will need to print out the PDF form from the website and return the completed form by post. If you wish you can also apply at a local Post Office.
The link below will take you to the application form page, with links to more details about how the Investment Account works on the left-hand side of the page. To access the form you will need a copy of Adobe Reader. Information on how to download this for free is available on the right panel of this page.