Premium Bond holders in certain regions consistently experience higher success rates in winning prizes than others, according to data analysis spanning the past nearly four years. Approximately 22 million people hold Premium Bonds—a government-backed savings product issued by National Savings & Investments (NS&I) that offers a chance to win monthly tax-free prizes ranging from £25 to £1 million.

The average prize rate, effectively the annual return on bonds, stood at 4.35 percent in the September 2024 draw. However, the distribution of prizes varies significantly by location and investment size. NS&I data reveals that while some bondholders may go years without a substantial prize, others benefit from more frequent wins, primarily influenced by the number of bonds held.

Every £1 bond has an equal chance in the draw. With a maximum holding limit of £50,000, roughly 1.4 million holders have reached this ceiling, significantly increasing their odds of success. For example, bondholders with the full £50,000 have an approximately 90.8 percent chance of winning any prize monthly and a one-in-138 chance of securing a £1,000 prize. Conversely, smaller holdings face longer odds: a £100 holding has only a one-in-210 chance of any prize and a one-in-68,970 chance of winning £1,000 monthly.

Regional disparities are pronounced when adjusting for the volume of bonds held. Out of 14 regions with more than 100,000 holders, Australia emerged as the luckiest location, despite typically smaller average holdings (£784), with a top-tier prize of £1,000 or more awarded for every £149,864 invested. Wales ranks second best, followed by regions in England such as the South West, South East, and East. Northern Ireland and areas designated as overseas (including Canada, Ireland, and Jersey) also rank favorably.

At the lower end of the spectrum, Greater London was identified as the least fortunate area for large prizes, requiring £175,007 invested per £1,000-plus win on average. Yorkshire and The Humber, Scotland, and the North West also recorded comparatively lower prize frequencies relative to bonds held.

Regarding the largest prizes, three regions—Hampshire (including the Isle of Wight), London, and Norfolk—each recorded six £1 million winners since January 2023. While London has the largest number of bondholders, Norfolk’s smaller population highlights the variance in prize distribution. Conversely, Wales and Lancashire, despite sizeable numbers of bondholders, have yet to produce a £1 million winner in this period.

Analysis also shows that winning multiple prizes of £1,000 or more is rare but possible; just 3.39 percent of such prize winners have achieved this feat twice since early 2023. The odds of securing the £1 million jackpot remain extremely low—approximately one in 1.37 million for £50,000 holders, diminishing with smaller bond amounts.

Despite the long odds, larger prizes occasionally go to holders with modest investments. For instance, a £100 holding won £100,000 recently in Havering, east London, while a £350 holding in Cheshire yielded a £100,000 prize. Historical examples include a £1 million win on a £17 holding in 2004.

The findings underscore the element of chance inherent in Premium Bonds and highlight the wide variability in winning rates across different regions and investment sizes.