Got a new alternator belt as power was flickering, seems to have sorted that.
Got a new variator - no more diesel sound. Happy with that.
Got a new cambelt tensioner and pulley - blinking whining at cold still there, but goes when hot.
Do all 147's whine when cold? In am wondering if it is just a noisy alternator? I am not worried now that I know the cambelt and pulleys are all spot on.
Also.... Pressed the aircon button today, heard the beep, but aircon did not come on. Kept pressing, it eventually came on. Pressed again, it went off. Pressed again, would not come back on. Pressed a few more times - now works fine. Strange!