Hi folks, an update on this problem, after having 4 mechanics look at this problem and none of them having a clue whats wrong.
One said battery terminals, one said fuel filter, One said its the immobiliser and other said no idea.
It keeps happening on and off.
Mate said from work to try tapping starter with hammer and listen for click, tried that and low and behold it clicked after about 30 seconds and started fine!.
So seems its the starter, now next question, how easy it to replace? and can a novice do it? I am away to search forums, just letting you know whats happened.
And so far its cost me $600 and a disconnected immobiliser.