Well, that wasn't too easy.
Remove the air filter bit.
Remove the plastic cover.
Remove the top clips on the grille.
Then the problems started.
The bottom section of the grille has plastic female slots where a male bit of plastic clips into.
Getting the male clips parted from the slots was a nightmare.
I phoned the dealer to find if there was an easy way of doing it, they didn't have a clue.
Using a huge screwdriver I prodded each clip until the one on the end finally gave way.
Then pulling that section away from the car, I went through each clip and was able to pull it out from the grill area.
It actually pushes in from the front, however, it can't pull out the same way due to all the clips.
I removed the screws on the old grill, however, I was wrong in thinking the chrome bar would just come away, it doesn't. I will leave that to another day.
Cleaned all the dirt and crap when the grill was out, good as new now.