I get a loud creaking from the right hand side pillar between the windscreen and the door. Have tried pushing the dash, banging it etc to no avail. Have now discovered that at about 50mph with the wipers on the noise is made on each sweep of the wiper (driver side only and when wiper in vertical posistion.) I can only assume the noise is coming from the engine bay behind the dash and connected to the wiper motor? Took it to dealer left the car with them, guess what? They ordered me a new EXHAUST !!
oh dear oh dear...
creak and rattle........ 
