The main purpose of the Student Route visa is for you to come to the UK to study. Where you are permitted to work, the intention is that this should be to supplement your income whilst studying. If you intend to undertake employment during or after your studies you will need to meet certain working conditions as specified in your visa.
Please visit the below pages for more information on working in the UK whilst studying and after you graduate.
Working during your studies
Working after your studies
Information on national insurance (NI), tax and minimum wage
More information on working part-time, including vaccancies can be found on through the University recruitment agency Worklink.