The Dean of Student Life can signpost you to advice on budgeting and financial matters. A good place to start is the British Council’s Student Calculator see https://study-uk.britishcouncil.org/moving-uk/money-budgeting
See also the Student Beans website for a range of student discounts that you can access: https://www.studentbeans.com/uk
In some circumstances, students may apply for financial support from ISH’s Mary Trevelyan Hardship Fund https://www.ish.org.uk/financial-support/
If you are considering taking a part-time job, ISH advertises part-time and temporary job vacancies. Check www.ish.org.uk for details (click on “About” and “Work With Us”).