Leadership and experience

The team at Admina has real life experience of administering a number of structures with various investment asset classes including listed entities, buyout, private equity, venture capital, real estate, mezzanine finance, infrastructure, technology, life science, renewable energy and fund of funds.

Mark Hooton


Mark Hooton qualified as an Accountant in the offices of PwC in both Guernsey and Jersey in the Channel Islands. Mark went on to hold senior positions within the firm prior to joining Gentoo Fund Services Limited at its inception in 2011 as a director.

Mark has a wealth of experience in Private Equity and other alternative asset classes as well as advisory lines of service. Mark was the head finance director at Gentoo Fund Services Limited, including having responsibility for the oversight of the IT systems as well as leading the establishment of Gentoo Depositary Services Limited, which were both subsequently sold to the TMF Group in 2017.

During his career at PwC, Mark assisted several CI companies with obtaining their first AAF 01/06 controls reporting attestations.

Mark is a fellow of the Institute of Chartered Accountants in England and Wales (ACA) and holds an Honours Degree in Physics (BSc Hons).


Christine Whitehorne


Christine Whitehorne commenced her career in the financial services industry in 1993 at Guernsey International Fund Managers Limited (now Northern Trust), specialising in private equity fund administration.

In 2000, Christine joined SG Hambros Trust Company (Channel Islands) Limited (now SG Kleinwort Hambros Trust Company (CI) Limited), specialising in third party private equity fund administration. As a director, Christine was instrumental in the significant growth achieved. In 2011 Christine co-founded Gentoo Fund Services Limited and assisted in leading the department as it became part of this newly formed company, which was subsequently sold to the TMF Group in 2017. Christine held the position of managing director of the Administrator up until mid July 2019.

Christine is a fellow of The Chartered Governance Institute (FCG), a Chartered Member of the Chartered Institute for Securities & Investment (MCSI) and holds a Masters of Science in Corporate Governance and Administration (MSc Corp Gov).


Roger Le Tissier


Roger is a consultant and non-executive director of asset managers, investment funds and private equity general partners. In the past he has also been a director of insurance groups, fund administrators, trust companies and pension companies. Roger is involved with several charities as a director and consultant.

Prior to that, he was the founder partner and senior advocate at the Guernsey law firm now known as Ogier (Guernsey) LLP, from inception in 1998 until his retirement in 2013. He and the firm specialised in commercial matters including investment funds, international finance, banking, insurance, trusts, securitisations and corporate matters and, from a later date, litigation. The firm experienced significant growth and acted for many leading global financial institutions.

He has also been appointed to a number of industry consultative bodies, presented at a number of conferences and also contributed to a number of publications including a book on the international regulation of investment funds. He contributed the first ISDA netting and collateral opinions for Guernsey and continued to provide the updates until his retirement from Ogier. Prior to 1998, he held senior positions with a leading fund administrator and the GFSC.