These are funds intended to relieve student hardship. Universities operate within government guidelines but have some discretion regarding distribution. Some trusts, charities and foundations will consider applications for financial support for study. It is essential that you research each organisation before applying to establish their eligibility criteria, method of application and what they offer. They are overwhelmed with applications and few will be successful.
Applications can take some time to process, help at short notice is unlikely.
They will need to be satisfied that you have tried all other sources, including loans. The 'Funderfinder' database held in the Student Advice Centre may be useful. Contact details are under 'Sources of Information'. Directory of Grant Making Trusts. City University S.U. Student Advisers.