Garth co-founded SigmaRoc with David Barrett, Max Vermorken, Charles Trigg and Alphons Vermorken. Garth was Finance Director of SigmaRoc from its inception and acted as an Executive Director from January 2017 until April 2020, after which he remained on the Board as a Non-Executive Director and, through his partnership at Westend Corporate LLP, continued to provide corporate financial and company secretarial services to the Company.

Prior to joining SigmaRoc, Garth began his career providing audit and corporate services in Perth, qualifying at KPMG, before moving to London in 2005 where he provided compliance services across a range of industries. This led Garth to a Finance Manager role at Apple Inc. where he spent four years working on business process improvement, developing and implementing new and improved financial processes and systems before co-founding Westend Corporate LLP providing corporate and financial consulting services for AIM quoted companies, predominantly within the mining and resources industries.

Garth holds a Bachelor of Commerce Degree and is a member of the Institute of Chartered Accountants in England and Wales.