You live in Manchester so why are you bothering applying for summer work? Just walk down that road with temo agencies on it and get a job. I did the same thing when I was a student and they were practically fighting to send me to work as soon as possible. The work was ****, but it was money and experience. I ended up landing a filing job in the CIS tower basement. A joke job, but it was easy money. That was through Adecco I think. Anyway, just go down there Monday morning and I guarantee you will be working by Friday.
Edit - I write this with the understanding that you are returning to education soon? If not, then still go to agencies and get your details on file. Places like Hays can be useful getting a decent, fixed-term job to tick you over.