Ok bringing us all back on track slightly, I got the new battery fitted and it did turn over, gave the starter motor a tap and rocked the car whilst in gear to hopefully loosen it up or something and then when started it again I got the same electronic whir that I was hearing before!!!
So we can rule the battery out, where do I go from here!
I think it needs the fluids topping up....coolant mainly but the oil level though a little grotty looks ok
Also I still cant hear the pump starting up when I turn the ignition on.