QUOTE=McTaff I have a tinny rattle (sounds almost like a metal ruler being tapped against a tin can) from under the car.
From inside the car, me and passengers all swear it is coming from directly under the handbrake lever (but on the underside of the car).
Subaru have pulled apart all the heat shields several times and removed all the stones, etc... found nothing. It is driving me crazy./QUOTE
I had that aswell, after i had removed all the heat sheilding! The noise was directly under the handbrake area!
What i found was happening was that the sheild that lies between the center cat =>- was lowering itself down onto the center baring of the rear drive shaft, simply grap a big screw driver and pry it away

or remove it or something along those lines