Inside the bitter billion-dollar feud tearing Gina Rinehart’s family apart

John Hancock at home in London. He says he moved with his wife and children to the UK to try and protect his family from the personal toll of the court case with his mother, Gina Rinehart. Photograph: Graeme Robertson/The Guardian

The last positive memory John Hancock has of his mother, Gina Rinehart, is a meal they shared together almost 20 years ago.

It was at the Perth office of Hancock Prospecting, and Rinehart’s private chef cooked them a meal of lambs’ brains – a shared favourite.