An undergraduate Masters course (i.e. your first degree) would be funded by the student finance company (SFC).
A postgraduate degree will not be funded by the SFC. For those you will need an external source of finance - grants (depending on your field and grades), scholarships (depending on your grades), a Professional & Career Development Loan (PCDL - issued by certain banks, no repayments until one month after your course ends), sponsorship through a company, or personal funding (e.g. savings, parents, fundraising).