Can I open a bank account just to get an overdraft?

I am really lacking money at the moment I only have �100 left in my existing overdraft and I cant extend it. I dont start my new job until August. I booked this holiday to ireland ages ago and just realised its next week and I havent fully sorted out my expenses for it yet and I just worked out that petrol alone will be about �150 so I have no money . I was wondering if I can open an account with a different bank and just be able to use an overdraft to see me threw then I can pay it all off when I am working, could I do this? if not what can I do to get hold of some cash? about �300 should be more than enough