As Premium Bonds celebrates 60 years since their launch in November 1956 National Savings reveal that there is still nearly £54m still to be claimed.
In total 1.3 million prizes have not been claimed, but there is no deadline for bond holders to get their money.
The largest unclaimed prizes, of which there are five, are worth £100,000 each.
http://www.bbc.co.uk/news/business-37824834
You can check if you have any unclaimed Premium Bond prizes by entering your your Premium Bonds holder's number (not your Bond number or NS&I number) Here