About Us

Cornerstone officially re-launched in January 2008 to bridge the gap between clients and their business aspirations, whether through start-up facilitation, business development or general business consultancy.

Business principal John Sheath has over 30 years of industry experience upon which to draw and in that time has established a network of strategic alliances with other industry professionals, service providers and government departments, both locally and around the world, in order to maintain a comprehensive client support and service offering.

John is a Fellow of the Institute of Financial Accountants, Fellow of the Institute of International Accountants, Member of the Chartered Institute of Management a Member of the Institute of Directors and a Chartered Director. His experience covers international and domestic banking, captive and mutual insurance, tax strategies and accounting solutions. From his Isle of Man base he has worked closely with professionals in the UK, Channel Islands, the Middle East, Singapore, Hong Kong and other European jurisdictions. He has strong relationships with the IOM financial regulators, been involved in various government initiatives and committees, is a regular speaker at international finance seminars and author of numerous articles for international industry publications.

John is also a Non Executive Director providing oversight and governance to several businesses, both private and listed. As a trustee John is responsible for the safety and proper governance of a local family trust.

John Sheath

"John Sheath has extensive knowledge of the financial services industry on the Isle of Man and has gained wide experience of assisting regulated entities in their relationships with the licensing authorities both in the Island and further afield. His knowledge of the industry and the high regard in which he is held make him ideally qualified to assist companies seeking specialist help in setting up operations or developing existing businesses."

Robert Quayle MA, Consultant and former Clerk of Tynwald to the Isle of Man

“I have known and worked with John Sheath for the last 7 years and hold him in the very highest regard. He is also very well known and connected in the Finance Sector on the Isle of Man and has played an active role in helping to determine the strategic direction of the sector in conjunction with various industry representative bodies and as part of joint working parties involving Government and the private sector. In addition to his involvement in helping to shape the future of the industry, John has also been very successful in his business career. He has managed and directed a number of businesses very profitably and I am aware that in doing so, he has built effective teams to assist him in the process.”

Tim Craine, Isle of Man Government Director of E-Business and Space Commerce

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John Sheath’s CV

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