Hi Lee,
Yes it's behaving fine, and not got above 82 deg C since I switched the fan to run constantly again. Most bizarre.
I think for the sake of a few quid, when I bring it over again for the suspension top mount, I think a new water pump is the right thing to do.
I do have the laptop running the Motec software showing me all the sensor readings when I drive it nowadays just to be sure though!!
I am also going to get the map tweaked in the New Year, and release some of the power that I know is waiting to be unleashed!!