Thankyou all so much for kindly replying to my post.
The noise was that bad that I could stuff around any longer especially as it had something to do with braking system.
It went into the repairers first thing this morning as an emergency repair and it was discovered that the front brake pads had completely worn away so it was metal to metal. So the front brake pads were replaced, brake fluid replaced and the discs machined. It was done at a cost of AU $270.00. We were told that we were at the bare minimum legal limit to machining if it happens next time the discs will need to be replaced.
So my next question how much does it cost to get discs replaced?
I appreciate all of your help. I want to keep the old girl on the road as long as possible as she is mechanically sound and even though has just over 413,000 kms on the clock is still running like the day she rolled off the show room floor.