Noisy brakes, vibrations felt through the pedal, and score marks on the disc are all common indicators of faulty car brake discs that can lead to a MOT failure
To slow the car down, metal disc brakes work in tandem with brake pads and calipers. Brake discs spin at the same pace as the wheels because they are attached directly to the wheel hub.
When the brake pedal is pressed, the calipers force the brake pads against the spinning discs, slowing and halting the wheels and the car. Because discs slow the vehicle by generating friction from direct contact with the brake pads, they will eventually wear out and need to be replaced.
Check your car's MOT status and get the brake discs replaced as soon as possible to prevent failing your next MOT test.