OK then, today I had yet another go at separating the padded top from the centre section of the armrest and after much swearing succeeded, besides the 2 clips that you kindly highlighted, I can now confirm that there are 6 others, well hidden the little blighters are as well. I had to enlist the services of my son as well to help as you need to be a flipping octopus to operate all the flaming clips 🤔.
In addition to the ones you highlighted, I have highlighted these pesky ones in green as well in the photos and these locate in the holes also shown in green on the other photo, 3 each side of the rest. Those clips highlighted in red depict the visible ones that you can clearly see. Under no conditions attempt to move the 2 real big beefy clips, the ones that are situated towards the cup holder end of the rest, its the other smaller clips at the tunnel end of the rest, I highlighted both of these clips in red to aid identification, the ones not to try are by the label.
Now that I have been able to separate the padded bit the armrest is extremely quiet and the only occasional squeak seems to be from the door card if I rest my knee on it and and a squeak every now and then from the steering cowling which I'll attempt at a later date. More on this later when I've completed the rest bit.