Cheers guys for the advice, I attacked the sensor today. What a tw*t of a job it turned out to be. A 1 hour job turned out to be a 4 hour job.
Here are the following steps:-
1. Disconnect the battery
2. Jack up the passenger side and support it on axle stand.
3. Remove the undertray and jack up the engine so that its just being supported.
4. Remove the front engine mount bracket and remove the starter motor.
5. Remove the oil filter
6. Unplug the sensor and by using a 5mm allen key unscrew the bolt on the sensor and pull sensor back slowly, otherwise it could snap in half. (That happened to me).
( If its snaps, you have 2 options. remove the radiator and slam panel, or drop the sump to get it out.)
7. Clean the hole out for dirt and grit.
8. Fit the new sensor and do the above in reverse order.
Hope these steps help you guys, my old sensor had some insulation missing around the sensor so it was arcing on the engine mount bracket which was causing the misfire.
So I now have a spare Coil, ECU and Fuel pump relay,dizzy cap,rotor arm and leads. Any takers?