The first July winner – from East Sussex – bought his first Premium Bond 57 years ago and has been entered into every draw since. He will finally receive a personal visit from NS&I’s Agent Million.

The second £1m winner who is from County Durham bought his winning bond in December 2016.

The two winning bond numbers are: 209CR931692 and 290BG876230.

Jill Waters, NS&I retail director, said: “Premium Bonds have been in the life of East Sussex’s winner since before the prize draws began, and I’m delighted that his investment has scooped him the jackpot prize.”

In addition to the two £1m jackpots, over three million other tax-free prizes between £25 and £100,000 will be paid out this month.

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Unclaimed prizes

According to NS&I, there are 1.6 million unclaimed prizes worth over £62m.

Unclaimed prizes result from NS&I not being informed of changes to personal circumstances, such as address changes.

Bond holders have the option of having their Premium Bond prizes paid directly into their bank account, which ensures prizes never get lost.

How to check if you’re a winner

You can check if you’ve won using Amazon’s Alexa, the prize checker on nsandi.com or the official Premium Bonds prize checker app.

Premium Bonds offered by government-backed NS&I are the UK’s most popular savings product. Each £1 bond is entered into a monthly draw, with two lucky bondholders bagging £1m each tax free.

Since February, it has been possible to buy Premium Bonds with a minimum investment of £25.