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Mark is Senior Partner and Chair of Johnston Carmichael, acting for a number of our largest private clients, companies and groups across a range of industries and sectors.

Mark joined the firm in 2006, making Partner in 2008 before being appointed to the Board in 2013. Mark became Chair in 2022, and in June 2024 was appointed to Senior Partner.

Mark has an extensive portfolio of clients and has a particular focus on advising entrepreneurs, high net worth individuals and the owner managed business sector. Mark is a qualified Chartered Accountant and also Chartered Tax Adviser.

Johnston Carmichael is an independent member firm of the international accountancy network Moore Global, and Mark sits on the European Board of member firms.


  • Private client tax, Business and corporate tax, M&A tax, business tax,


  • Real estate & construction, manufacturing, energy mining & renewables, hotels & leisure, retail & wholesale, healthcare