Mark Abbs is a renowned UK and US expatriate tax specialist with 25 years of tax and HR experience. He has worked with Big 4 accountancy firms and is an expert at providing bespoke tax and HR solutions for individuals working or living outside of their home countries. He is a Fellow of the UK Association of Tax Technicians, an Enrolled Agent of the US IRS, Global Mobility Specialist (GMS-T®), and an accredited Global mobility expert. He has a Master of Laws in International Commercial Laws, an MBA in International Management from the University of London and is a member of Mensa.

Mark Abbs leads the Global Mobility practice at Blick Rothenberg, a leading UK professional services firm, providing services to assist clients in managing their global workforce. As the leader of the BKR International Expat Tax Practice Group in EMEA and Asia Pacific, he is renowned in the global mobility community and regularly presents on global mobility issues. Mark Abbs is known for his expertise in tax equalisation cases and has even been an Expert Witness in a UK/US Tax Equalisation case in the High Court.