Brake pedal noise?

Hi everyone. Recently my k11 micra has started making a strange noise. When I'm doing 10mph or less and start pressing the brake it makes a "spring" noise and the pedal judders slightly. It doesn't make the noise when you are braking above 10mph and doesn't make any noise when you press the pedal when stationary.

Has anybody got any ideas of what this could be?

I don't know, I'll try to remove the ABS fuse then try again tomorrow to see if there's any change, I'll keep you informed
Well, I removed the ABS fuse and tried the car for a good 10 minutes, no more vibrating pedal
But yeah, I got the ABS warning light on :unsure: