Drop rear prop, undo electricals around transfer, unclip centre console (the leather centre section is held into the plastic surround by very delicate clips so be extra careful) and remove transfer lever, remove gearbox crossmember so gearboxes angle down, undo bolts where transfer joins gearbox and pull transfer back on a jack.
Job done.
When you put transfer back on, try and get it lined up before pushing it on to avoid damaging the oil seal in the back of the gearbox.