Ignition Coil update.......
 

As previously reported #6 piston misfiring, ignition coil the culprit....Now all done, nice new one, running sweet as a nut, hardly hear the idle and the rev needle not moving when idling. Safe as to say for past couple of weeks it had started running a bit rough, thought it was the supermarket fuel, so not a sudden fault methinks these coils{well mine wasn't} Hope the mpg improves too......