Not sure if this has been posted elsewhere, but in Birgit Bradtke's latest email, she has posted the following ....
"Sorry to be the bearer of bad news: 2018 brings an important change for the Mitchell Plateau.
Sadly, from the start of 2018, if you want to visit as an independent traveller, you will need a permit to access the Mitchell Plateau, called the Ngauwudu Road Zone pass.
The pass is valid for five days and for 2018 costs $20 per person.
Yes, unlike the national park passes, which are issued per vehicle, the Ngauwudu Road Zone passes are issued per person. Every passenger of a vehicle needs to buy a pass. "