We would recommend making use of your Student Bank Overdraft facility in case of an emergency.
An overdraft is when a bank lets you spend more money than is in your account (up to a pre-agreed sum). This can be a great way to have some emergency cash flow in times of unexpected financial difficulty.
Many banks offer student accounts with overdraft facilities, ranging from £500 to £3000. The overdraft usually has 0% interest, and banks offer flexibility in paying this back once your studies come to an end. For example, you could have up to 2 years to pay this back before the bank begins to add an interest rate.
Please bear in mind that if you use an unarranged overdraft, you may be charged fees by your bank. Check with your bank before using these services.