Martin Lewis has clarified a common misconception about when investing in NS&I’s  Premium Bonds for children becomes worthwhile.

In a new social post, the Money Saving Expert founder explained that Premium Bonds only offer a reasonable return only under specific circumstances, such as having a substantial investment (around £10,000 or more) and being liable to pay tax on savings interest.

Most children, he pointed out, neither meet these criteria nor benefit meaningfully from small…