One more thing...the car will not turn over and the starter relay just clicks away. I can turn the crank by hand so its not seized.

What could have caused this because it seems to have happened in conjunction with the bottom end damage i.e rough at idle, low oil pressure cut out and then would not start without a jump (did this twice on the day)

Before the turbo was fitted it worked no problem. Does the alternator not charge on idle ? By the way recent new battery, alternator and starter motor.