Myth 1 – You have to have £30,000 invested to win the jackpot
Jackpot winners have had different amounts invested over the years – one winner of the £1 million jackpot only had £17 in Premium Bonds! It is true though, that the more Bonds you hold, the better your chances of winning.
Myth 2 – Only new Bonds win prizes
Each £1 Bond has an equal chance of winning, regardless of when or where it was bought. Several winners in June's jackpot draw were bought in the early years that Premium Bonds were on sale. For example, in this month's draw a prize of £1,000 was won with a Bond bought in 1970. Bonds bought more recently may seem to win more often because there are more new Bonds than old.
Myth 3 – Old Bonds are left out of the draw
Winning numbers are generated randomly and then matched against eligible Bond numbers afterwards – numbers aren't entered into or stored in ERNIE so there's no way that any Bonds can be left out of the draw. Even Bonds bought as far back as 1956 may still be eligible for the draw.
Myth 4 -Only Bonds from the South East win prizes
If it seems that more prizes are won by holders in the South East, that's because there are more Bonds held there compared with the rest of the UK.
Myth 5 – The more people that buy Bonds, the more my chances of winning are reduced
Not at all. The prize fund for each draw is a month's interest on all eligible Bonds in the draw, so the more Bonds we sell, the bigger the prize fund.
I came across the winners list for June over the weekend. What do people think of premium bonds? I've been considering chucking the max, £30k at this as I would have 30,000 chances of winning the Jackpot each month, I guess I only need to win it once in a lifetime to make it worthwhile and it is all tax free!
One individual only had £100 but managed to win £5k.
http://www.dailymail.co.uk/money/saving/article-1637084/Premium-Bonds-winning-numbers.html