Hi Nicola,
The handbrake light also doubles up as a low brake fluid level warning light, which might also explain the noise from the rear drum brakes as if they are worn to the limit the fluid level would of gone down, so you need to get it checked out without delay, Quickfit do a deal that if they replace the brakes they will then replace them for the rest of the life of the car.
nige110162@hotmail.co.uk
nigel, October 2008