loose handbrake and spongy brakes?

hello, on my 206 (51 reg) the hand brake has SUDDENLY(one day fine and the next not fine) gone very loose and at the same time the foot brake has gone very spongy, it still works but travels virtually all the way to the floor before it has any effect, and the hand brake is virtually upright before working, there's no sign of fluid on the floor and the level in the brake reservoir is fine. any help please ?