greenoakha - board and senior team

board and executive team


Board of Management 

Our Management Board is formed of a maximum of twelve members. Skills represented on the Board include finance, housing design and development, risk, housing management, legal, asset management and sustainability. Our Board recognises the importance of robust governance and Members undertake annual appraisals of individual and collective performance. 


Board Members

Martin Large


Retired CEO

Ex CEO to Dec 15 of GLE Group, a leading SME focused property regeneration and business services organisation. Significant senior management and Board experience. Former NED at Pocket Living Ltd, Selwood Housing Society Ltd and Hexagon Housing Association. Current chair of Greenoak Housing Association Ltd

Jane Vessey CFA

Vice Chair

Fund Manager and Investment Director

Member of the Finance, Risk & Audit Commitee and Assets & New Business Committee 

Qualified as CFA (Chartered Financial Analyst). 18 years’ experience as fund manager and investment director in Europe and Asia. Non-executive experience in fund management and voluntary sectors. Wide knowledge of investment industry and lectures on investment on Masters degree courses at leading business schools.
Owner and MD of Wentworth Advisors, INED and Chair of Margetts Fund Management, INED of Northern Trust Global Investments, she is on the Board of Ground Rents Income Fund plc, a REIT managed by Schroders Investment Trust. NED and served on Risk and Audit committee at Inquilab HA, Board member of CFA UK in London

Peju Fabunmi

Board Member

Hosuing Development Consultant

Chair of the Assets & New Business Committee

Peju has 25 years involvement in the housing sector as a manager and consultant with specific experience in planning, property development and acquisitions. Peju initially qualified as an urban planner and has post graduate diplomas in both Urban Design and Property Development & Planning (RICS accredited). Peju is also a career mentor and CIH Chartered Member.


Louisa Martin

Board Member

Executive Director & Board Advisor

Member of the Finance, Risk & Audit Commitee

Louisa has specialised in Capital Markets for 22 years. She is an ex Director at Citigroup and ABN AMRO, and held senior roles at Societe Generale and Daiwa, advising asset manager clients on investment, risk and strategy.  She was Director at a Toronto-based real estate brokerage and advisory, and founded an insurance start-up.  She is a member of the Society of Occupational Medicine and an NED of Bullion Vault where she provides mediation work.  Louisa also is a Director of BIGbleu, a London-based property business, and is a Trustee and Committee Chair at Citizens Advice Brent

Gordon Mattocks CPFA

Board Member 

Retired Accountant

Chair of the Finance, Risk & Audit Commitee and Member of the Human Resources & Remuneration Committee

40 years’ experience in public sector finance and audit.  Worked in new towns, local government, higher education and lastly for 15 years in social housing.  Subsequently a member of various boards/ audit/ risk/ finance committees, including currently Board member of Inquilab and Ekaya housing associations. 

Past audit committee member of the Chartered Institute of Public Finance and Accountancy (CIPFA) and Treasurer/ Executive Committee member of the Housing Internal Audit Forum, the trade association for housing internal audit



Diana Kingdon FCG MBA


Chief Executive/Secretary

Diana has over 30 years’ experience in senior management roles. She has considerable experience of property management and support services, and strategic planning, financial and company secretarial matters. In her current role, she is responsible for working with Greenoak’s Board to set the strategic direction of the organisation.

Adrian Buffery MSc


Director of Development and New Business

Adrian is responsible for leading on new business and development and oversees our asset management re-investment. He has extensive experience in housing development and planning in Housing Associations and Local Authorities. He is experienced in policy and service delivery in a variety of voluntary and public bodies.

Adrian’s work at Greenoak has sought to ensure that our homes are built to meet priority needs and maintained to a high quality standard including energy efficiency. He leads on new business ventures and partnerships and provides technical support to our asset management team.

Adrian Smith (Ady) MCMI MIAM

Head of Assets & Building Safety

As an experienced senior leader within the affordable housing services sector Adrian has successfully transferred the knowledge & skills, he gained in his 20 years within industrial manufacturing industries, into his unique brand of resident & property services. Incorporating a client led build, design, and servicing experience within commercial & private sector has enabled Adrian to appreciate the importance of providing the best product for all parties and most importantly the customer journey in in the provision of the end-product.

Having successfully transitioned into the affordable housing services sector nearly 10 years ago, Adrian has really fine-tuned and then blended his skills within People Management, Business Strategy, Health, Safety & Assurance, Asset Management, Building Pathology, Eco Build, Audit, Leadership & Coaching to develop an innovative, structured & people inclusive culture, who strive to deliver the best services possible.

As a long-standing member of the Chartered Managers Institute, the Institution of Occupational Safety, and Health and recently accepted membership to The Association of Safety and Compliance Professionals (ASCP), Adrian has people & safety at the heart of his management ethos.

Adrian has stated that the opportunity to moving to Greenoak Housing Association was “an opportunity which could not be missed”. Having been educated within Environmental Sciences, Ecology, Biology, Geography, Conservation and Eco-build working with an award winning (Low energy social housing project of the year & Social Housing Provider of the Year - Innovative Approach to Green Homes Award), forward thinking & affordable housing services provider, with a passion for Sustainability and a Greener Future for all residents “was a no brainer”.

(MCMI) Member of the Chartered Managers Institute
(MIAM) Member of the Institute for Asset Management

Berni Rigby


Director of Finance

Berni is a Financial and Management Accountant and has had over 30 years’ accountancy experience including 20 in the NHS. 

As Director of Finance his overall responsibility is for the strategic leadership and overall management of Greenoak's Finance team and ensuring that the appropriate financial and corporate services strategies, plans, processes and controls are in place.