I removed the Head unit today with a couple of bits of coat hanger wire.
The B&M is mounted underneath the HU in a second slot in the radio cage.
To get it out, you will need to remove the centre panel.
Undo the gearstick velcro and press-stud
Lift the gearstick panel up from the handbrake end, until it pops out of its 4 clips
Remove the cables to the buttons and put aside
Undo the two pozi screws at the bottom of the centre panel
Remove the left and right air vents - us a bit of coat hanger with a hook on the end. They pull out
Undo the two pozi screws inside these vents
Undo the two pozi screws either side of the head unit cage
Pull the panel out.
Undo the cables to the heater, start button and key slot
There are 4 screws on the cage fixing it to the front panel. That holds the head unit and the B&M module.
Remove that, press the clips on the B&M frame and it will slide out