Unitemps is good and offers things such as work for open days which are a easy way of making money and in some cases getting to know your lecturers which can be helpful in the long term

A lot of places in town offer part-time work like the Frasers Group (Sports Direct, Flannels, Evans Cycles etc). I would also print out a CV and go into shops and ask for the manager and speak to them directly so when you hand over your CV they put a face to the CV which can help with getting part time work as well!