Don't keep your money under your mattress, put it in a savings account and make it work for you. Although interest rates on savings accounts are lower than they have been in recent years, you can still make a sizeable return on your hard-earned cash if you find the right bank account. Also, by putting away even a small amount each month from your wages, you are reducing your need to borrow money in the future. Calculate how much of your disposable income (after rent and bills have been paid) goes on necessities, and be realistic about the amount that you can afford to save without getting into financial difficulties.
The best deals on savings accounts can be found when you agree to lock your money away for a certain length of time, and as you would expect, if you deposit a larger amount, your interest rate will be more favourable. Some savings accounts will allow you to withdraw money but will limit you to a set number of cash withdrawals each year. Make sure that you are aware of all of the conditions, because it is likely that your interest rate will be affected if you take out too much. You are not limited to one savings account, so you could have one for a 'rainy day' that allows you easy access, and another linked to stocks and shares that you use as an investment opportunity. Consider ISAs (Individual Savings Accounts) for tax-free savings up to a maximum limit, and if you are considering any savings opportunity that constitutes a risk to your original investment, seek professional advice from your bank or an independent adviser first.