Apply for a scholarship or bursary when registering for your PhD. Most university departments will try to help their doctoral students to support themselves until they complete their degree. Many schools will offer bursaries and/or scholarships to students along with a letter of admission to the program. There are also departmental, regional and national scholarships that are open to students once they have been accepted into the department. Ask the head of your department for information about the bursaries and scholarships open to you and how to apply.
Apply for a job as a teaching or research assistant in your department. Teaching assistants (TAs) and research assistants (RAs) are master's and doctoral students recruited to help professors manage their classes and their research projects. You can apply for a job as a TA or RA through the head of your department as well as the head of the graduate department.
Enroll part-time for your PhD while working another job. Work on your PhD during the weekend and after you finish work. It can be difficult to balance both a job and studying and writing toward a doctoral degree. However, without other financial assistance this may be your only option.