Once you turn 55, the parts of the Student Loan you can get are limited.
What you can get
Once you turn 55, you can only get a Student Loan for compulsory course fees
What you need to do
If you're already getting a Student Loan when you turn 55 and can get living costs or course-related costs, you can still get these until your application finishes. But the next time you apply, you'll only be able to get the compulsory course fees.