It is difficult to know what the exact problem may be without one of our technicians inspecting the brakes or hearing the noise.
However, the cause of bake noise is most commonly due to something catching or sticking that should normally be free moving, such as a brake calliper or something that is worn down to or beyond its designed operating limit, such as a brake pad.
You can book a free brake inspection at your local branch, where we can identify the cause of your brake noise and discuss options to correct it.