He has acted for leading corporations in the energy and resources sector in Australia on matters ranging from major engineering and project disputes, joint venture disputes and arbitrations, through to responding to regulatory investigations and associated civil penalty proceedings. He also acts regularly in director and shareholder disputes. Mark has been voted by his peers as one of Australia’s Best Lawyers for Litigation since its inception in 2009, and across multiple categories including Alternative Dispute Resolution, International Arbitration, Regulatory, and ‘Bet the Company’ litigation. He has been voted as Western Australia's Alternative Dispute Resolution "Lawyer of the Year" for 2014, the International Arbitration “Lawyer of the Year” for 2015 and 2018, "Lawyer of the Year" for 2019 - Regulatory Practice.
He maintains rankings in all prominent directories including Chambers, Legal 500, and Doyles Guide where he ranks as “pre-eminent” for commercial litigation in Western Australia. He is also ranked for Arbitration and Commercial Litigation by Who's Who Legal: Australia & New Zealand 2024.