Well, I have just replaced the crank position sensor with another new one.
This new one is also knackered! I fitted it and plugged it into the loom and the car doesn't start or fire at all now. No spark. Tested the new sensor with my multimeter and across the middle pin to one of the outer pins it measures 1 ohm, to the other pin it is 11 ohm so it would be safe to say that the sensor is knackered.
I also got the sensor I pulled off and tested that and there wasn't a reading between any of the pins as in higher than the 2 meg/ohm that my meter reads up to.
Funny thing is, I was curious about what type of sensors these are so I cut the thing open to get access to the electrics inside.
Turns out, there is a magnet and a circuit board inside the sensor that consists of 3 capacitors, a resistor and a 4 PIN IC. Funny thing is, I measured the connections from the cable directly where they meet the circuit board, across 2 of them I read 700ohm and between the opposite I read nothing.
Exactly what a new sensor with nothing wrong should be like!
Looks like the epoxy resin that the sensor is housed in is may be causing trouble as with all the epoxy removed, I'm getting a proper reading so something is going wrong with the housing.
I've just bought ANOTHER new crank sensor which will be my THIRD sensor and put a complaint into the supplier that supplied the faulty sensor I fitted today.