Although there’s a chance you could win big with Premium Bonds, the probability of hitting the jackpot is small. We don’t sell your personal information, in fact you can use our site without giving it to us. How money. Premium Bonds under various names exist or have existed in various countries. In October , the odds returned to 24, to 1 with the prize fund interest rate increase. ERNIE’s output was independently tested each month by the Government Actuary’s Department , the draw being valid only if it was certified to be statistically consistent with randomness. How safe are premium bonds?