Just take the clip off the cable and disconnect it.
Ok got that - but before you can move the rear seat, you’ll have to remove the plastic trim which means removing the emergency brake handle as well.
Thanks to ML Auto for all his suggestions - I've documented my progress in the following pictures:
On the bottom of the emergency brake handle, you’ll find two small hex nuts holding it in place. You can loosen these to remove the handle.
There's some leather that's attached to the plastic trim beneath the emergency brake so you need a screwdriver to pry off the metal nut clips.
The nut holding the plastic trim covering the emergency brake at the rear bulkhead is easily accessible but the one towards the front you'll need
to hold the screw with some pliers to get the nut off.
To get the iphone trim piece off, the front one is easy enough but for the rear one at the back, you'll need a ball hex key so that you can separate the emergency brake plastic trim from the rest of the console.
Now you should be able to lift off the plastic trim over the emergency brake
Now you'll have full access to remove the bolts holding the seat into the frame - two on each side plus the seat belt and seat belt holder.
You should be able to move the seat with the frame on and access the bottom - two more nuts to remove and the heated seat wires. You'll have to slide the seat out from the frame with the manual holder in the way so it'll require a little jiggling.
All done! The rear seat was a much more difficult task than the front seat mainly because of all the other little things like removing the console, emergency brake handle, etc.