If you feel you already know some of the topics that are covered in your course, either due to previous learning or from experience of work, then you may not need to study all of the course.
Accreditation of Prior Learning (APL) is the name given to the process of gaining credit towards a qualification because of something you have learnt in the past. If you are eligible for APL you won't have to learn the same topic again, and so you can be exempt from a module, set of modules or year of a course.
To learn more read about APL in the Quality Handbook. If you think you are eligible for APL, please contact your course leader.