Matt Corby

We can see him playing a nord Stage 88. At 2:42 we are able to see the "eighty eight" text on the right.

Around 2:38 Matt moves the synth out of the way putting it in its usual place. Considering the shape of the synth, the color palette of the buttons and getting a glimpse of the text on the synth at 2:42, I can assume it's a Juno 106.

In this audio live show of Matt playing at Splendour In The Grass, a slideshow of images can be seen and at 17:05 an image is displayed in which Matt is clearly playing a Mellotron and judging by its back I suppose this is a mini. I think some other pictures from that show can be seen on the internet with the Mellotron.