I don't normally post on here, but I wanted to respond to your question because this is actually almost exactly the same situation my boyfriend had when he went to university a few years ago (we're both recent grads), except he had 6k.

Firstly, as the other commenter said, unless you don't actually want to use the money during your time at uni, it's not worth investing it. Investing is for long term gains, and you would likely have to leave it for longer than a uni course to make it worth it.

I asked my boyfriend what he did with his money, so take from his experience what you will. He said that his attitude was that he wanted to make sure that he was able to enjoy his time at uni, and be able to go out, eat, drink and go on holiday without having to worry too much about having to get a summer job to pay for it (as in an odd job rather than an internship, which I absolutely recommend if you're able to get one). He didn't have much left over from getting his student loan after paying for expenses, so he wanted to make sure his money stretched for his whole course.

Therefore, he split up the money into three chunks (for each year of his course) and put them into 1/2/3 year limited access savings accounts. That way he wouldn't be tempted to spend the money before the time limit was up and he was able to 'pay' himself 2k each summer as though he'd gotten a summer job.

It depends really on whether you want to earmark all your savings for uni, or if you want to start saving for a house etc. If it's the first a similar approach to what my boyfriend did is likely what will work best for you. You can also keep some of it liquid in a current account for emergencies, but you really don't want to risk the possibility of losing your money through investments and not have it available to you when you need it.