All done chaps.

I also had the ignition leads replaced and the crank sensor replaced at the same time.
It got rid of my slightly rough idling issue.
The crank sensor was precautionary, as I'm aware these can be an issue and I have no idea if its been replaced in the past.

Not looking forward to the day the back box on the exhaust fails - they are not even listed over here!! Fortunately, mine still looks quite solid.