Most postgraduate students fund themselves. Grants are available through the various research councils, but these are intensely competitive and will never meet the demand for funding. Also, postgraduate students do not qualify for student loans. But don't be misled, these are commercial loans for courses which offer career benefits or training and can be limited to the legal or health care professions. The repayments are not linked to salary and start one or two months after the course finishes.
Fees also vary dramatically with no standard level.
For example, MBA courses can cost 10,000 or more. Ask about funding when contacting departments and check with a university careers service for information on charitable sources, trusts and scholarships. Make sure that you also find out about any additional fees you might need to pay on top of the base rate for the university. You must take account of departmental research fees, laboratory fees and specific course costs, which may run into hundreds of pounds. For shorter courses it is particularly important that you remain focused and make the most of your time.