I have recently come into some money. I'm planning on paying of 10% of it mortgage this year and next, and keep some back for a few treats etc. Someone said I should buy premium bonds instead of a savings account. I've read up on them - it seems that you literally have access to the money should I want it all back, but there is the added chance of winning small prizes?
Is it really as simple and risk free as that? And I can withdraw it when I want?