Lazy brake pedal?

[lanciamad]

Hi all,
Just jumped in the car for a short drive, admittedly not been used for a little while and the brake pedal isn't returning back up to the correct position and causing the brake switch to still be active yet once you take pressure off the pedal the whole braking system is still fine.
Is there a spring I should be looking for on the pedal box which may have snapped or stretched which pulls the pedal back to where it should be?
Thanks, Marcus