But meanwhile, beware that this is not as straightforward as it seems.
At present you owe £7,280. Precisely how much you will pay in interest will depend on the terms of the loan. However, assuming that you make regular monthly payments to cover the remaining loan and the interest you should pay something in the region of £700 in interest over the three remaining years, making the monthly payments around £222. (You must bear in mind that as the loan reduces the interest payable on the outstanding amount also reduces. It is not a simple linear calculation).
If you keep your money in the bank at 5% you will earn £909 net if you are a standard rate taxpayer or £1,147 if you are a non taxpayer.
You need to find out from the lender exactly how much it will cost to pay the loan off early and how much the total repayments will be if you keep the loan for the full period (you can work this out yourself if you know your monthly payments).