A savings bank for everyone
The Post Office Savings Bank opens, bringing a simple way to save within reach of communities across Britain.
NS&I about us ↗A guide to the institution behind the familiar green savings book, the monthly Premium Bonds draw and more than a century and a half of British life.
National Savings & Investments sits in an unusual corner of British life: part savings provider, part public institution, and a name many people first met in a post office queue.
From the first Post Office savings accounts to an online institution, the story tracks how Britain has asked people to save—and what it has asked their savings to do.
The Post Office Savings Bank opens, bringing a simple way to save within reach of communities across Britain.
NS&I about us ↗War Savings Certificates arrive in 1916; National War Bonds follow in 1917 as saving becomes part of the national effort.
Historical overview ↗Premium Bonds go on sale on 1 November, replacing interest with the possibility of a tax-free prize.
NS&I archive release ↗The Post Office Savings Bank separates from the Post Office, taking a step towards the organisation we know today.
Historical overview ↗The name National Savings & Investments is adopted, carrying a long history into a more modern service.
Historical overview ↗
Launched in 1861, the Post Office Savings Bank gave ordinary savers a practical route to put money aside. Its network helped make saving feel less like an abstract financial idea and more like a familiar errand, close to home.
A national institution, encountered one local counter at a time.
Browse the National Archives catalogue ↗Premium Bonds made saving feel a little different. They are still a savings product—but instead of paying interest, they enter eligible holdings into a monthly prize draw.

Premium Bonds are held as savings, with the chance of a prize taking the place of interest. The draw is part of their appeal—but a chance is not a promise.
NS&I states that it is backed by HM Treasury and has helped people save for over 160 years. That is useful context about the institution—not a guarantee of a particular return, nor a recommendation about whether a product suits you. For the current official explanation, visit NS&I’s own website.
A short guide to what NS&I is, what Premium Bonds do, and where to verify the details.
National Savings & Investments. The name was adopted in 2002, following a much longer institutional history that began with the Post Office Savings Bank in 1861.
NS&I describes Premium Bonds as a savings product. Rather than earning interest, eligible Bonds are entered into a monthly prize draw. Prizes are tax-free, but a return is not guaranteed.
No. A prize is possible, not certain, and you may receive no prizes. Rates and odds can change. Check the official product page for the latest terms, and consider independent guidance if you need help with a financial decision.
NS&I publishes its institutional history, and the National Archives catalogue provides records relating to the Post Office Savings Bank. We link to both below; the illustrations on this page are interpretive, not archival evidence.
History and product details can change in the telling and in the terms. Follow the primary sources—and a dated historical overview for context.