£100m in unclaimed Premium Bond prizes sparks criticism of NS&I tracing process

£100m in unclaimed Premium Bonds prizes remain unclaimed, with 11 winners of £100,000 unaccounted for. Critics argue that the process to trace accounts needs reform, particularly for those with paper records or gifted bonds. National Savings and Investments (NS&I) has paid over 99% of prize winners since its tax-free draws began in 1957.