Australia presiding over a mystery box challenge, an invention test and a pressure test. On 17 May 2015, White began his second week-long appearance on Masterchef Australia, in Week 3 of Series 7. On 12 July 2015, he returned for a second week on Masterchef Australia Series 7, entitled "Marco Returns Week". On 8 May 2016, White began his third year running, and fourth week-long appearance on Masterchef Australia, this time Week 2 of Series 8. On 27 August 2011, White was a houseguest on the UK version of Celebrity Big Brother to set a cooking task. In 2012, White fronted a new show for Channel 5 called Marco Pierre White's Kitchen Wars. It saw the UK's best restaurant partnerships balance food with front of house service, fighting for a place in a specially designed studio restaurant, where the top couples are each given their own kitchen and set of diners to impress. It received positive reviews from critics in The Guardian and The Independent. White was a principal judge in Masterchef Australia: The Professionals, which started on 20 January 2013. White co-hosted the show with regular Masterchef Australia host Matt Preston. On 11 December 2014, White appeared on the South African version of Masterchef which aired on M-Net. He had a cook-along in the final challenge in the finals between Siphokazi and Roxi. On 6 September 2015, White appeared on the New Zealand version of MasterChef which aired on TV3 (New Zealand). He was the Head Chef/Mentor of a team challenge consisting of the final 8. Controversies Treatment of customers and employees During his early career working in the kitchen at Harveys, White regularly ejected patrons from the restaurant if he took offence at their comments. When a customer asked if he could have chips with his lunch, White hand-cut and personally cooked the chips, but charged the customer £25 for his time. During his time at Harveys, White would regularly act unpredictably, from throwing cheese plates onto the wall to assaulting his head chef who had recently broken his leg. He later said that he "used to go fucking insane". A young chef at Harveys who once complained of heat in the kitchen had the back of his chef's jacket and trousers cut open by White with a sharp paring knife. White also once made a young Gordon Ramsay cry while Ramsay worked for him, and later said,