Board of Trustees

Amanda Millar – Chair of Board of Trustees 

Amanda is a double accredited specialist solicitor and Partner in a practice in Perth. She is also an elected Member of the Law Society of Scotland’s governing Council, member of the Society’s Audit committee and Convener of one of its regulatory committees. She is a member of an expert advisory group at Edinburgh Napier University and Chair of Mindspace Ltd mental well-being charity. She has extensive litigation, change management, governance and professional regulatory experience.

Tanya Castell MBE – Founder and CEO of Changing the Chemistry

In addition to her work for CtC, Tanya has a non-executive portfolio of her own applying her broad international financial services background and strong risk, regulatory and corporate governance expertise.  Tanya’s non-executive board roles include the bank Handelsbanken plc and Border to Coast Pension Partnership (set up to manage the assets of 12 local authority pension funds).  She is also  a governor of Fettes College, a leading UK independent boarding school in Edinburgh.  She recently finished her second three year term on the board of Scottish Canals and stepped down from the board of Faster Payments Scheme following its consolidation into Pay.UK.

Roger Duerden – Trustee

Roger has over 25 years’ experience working in technology and manufacturing, with roles in design engineering, project management, operations, manufacturing, business development and marketing.

He is the founding director of Oran Consulting Ltd, and in addition to his trusteeship at CtC, is vice chair of the board of Biggar Corn Exchange and a member of the funding panel of the Infinis Glenkerie Community Fund.


Mary Duffy – Trustee

Mary is from rural, working class Northern Ireland and has lived in Scotland since 1997, working for the NHS before moving to the voluntary sector. She is National Head of BBC Children in Need, focussing on supporting positive lives for disadvantaged children and young people. Mary was in the founding group for Changing the Chemistry, is a member of the BBC Scotland Diversity Steering Group, a trustee of the Social Enterprise Academy, a fellow of the Clore Social Leadership Programme and has had advisory roles to the Lloyds TSB Foundation for Scotland and the BBC Trust.

Yvonne Greeves – Trustee

As National Women in Business Manager for NatWest and The Royal Bank of Scotland, Yvonne is responsible for designing and implementing the WIB Strategy across the UK. With over 400 WIB specialists she supports this network to collaborate, build relationships and influence strategic partners and external organisations across the UK.

Yvonne’s passion is to champion female led businesses and has been a member of Women’s Enterprise Scotland’s Implementation Group for the last 4 years and is a member of WES’ Cross Party working group. Yvonne mentors women in business across the country. Yvonne is also Chair of MsMissMrs, a Community Interest Company seeking to empower women and girls from disadvantaged backgrounds.

Maria Hamilton – Trustee

Maria has over 25 years’ experience working in the technology sector within sales and marketing, operations and change management environments for private sector start ups through to global organisations. She runs her own business and coaching consultancy, helping start up and SME technology companies with their sales and marketing strategy. She also has a keen interest in diversity and mentoring within the workplace, in particular neurodiversity.

Maria has previously supported other voluntary diversity organisations through mentoring workshops and mentoring programme development. She has an MBA from Heriot Watt University and has recently gained an accreditation as an NLP Autism Coach.

Wendy Lamin – Trustee

Wendy started her career as a litigation lawyer at international law firms in Brussels, before moving into broking and risk management, specialising in complex executive insurance protection programmes for global multinationals. After moving to Scotland, she took on global pioneering roles in corporate communications and colleague engagement strategy in financial and professional services companies which allowed her to specialise in digital workplace transformation projects, impacting 60,000 employees in over 100 countries.

David Robinson – Trustee

An Actuary and former Marketing Director with Scottish Provident, in 2001 David became Founder and CEO of Edinburgh-based life insurer, Bright Grey (now subsumed within Royal London).

Since 2006, David has undertaken a number of consulting and NED roles across diverse sectors, including being Chair of insurer, Engage Mutual, Chair of fintech start-up, Money Dashboard, founding Chair of Trustees of charity, Smalls for All and a member of Court of Heriot-Watt University, Edinburgh. He is currently the Senior Independent Director of start-up ‘Leveson-compliant’ UK Press Regulator, IMPRESS, and a lay member of the Investigation Committee of ICAS.

Neil Stevenson – Trustee

Neil Stevenson is the Chief Executive of the Scottish Legal Complaints Commission.  He currently sits on the Board of the General Dental Council, and is Chair of the Remuneration Committee.  He also sits on the Council of the Advertising Standards Authority.  His past experience includes 11 years at the Law Society of Scotland, latterly as Director of Representation and Support, being a founder Director of the Scottish Arbitration Centre, and work in the NHS.  He has a law degree from Edinburgh University, and a Masters in Quality Management from Birmingham University.  He has a keen interest in equality, and for 5 years was a member of the advisory group on diversity to the Judicial Appointments Board for Scotland.  He worked with other CtC members to develop the board competencies framework used by CtC.

Karthik Subramanya – Trustee

Karthik Subramanya is currently Senior Advisor at the Boston Consulting Group, where he advises senior executives within Utilities across Europe and the Middle East on strategic issues. Till 2015, Karthik was Director of Strategy and Performance at SSE, and prior to that held senior management positions in Strategy, Corporate banking and Private equity in the Bank of Scotland and Lloyds Banking Group. He started his career as a management consultant with KPMG and Mitchell Madison Group.

Karthik is a Board Member of Creative Scotland, the main funding agency for arts, film and creative industries in Scotland. He has played a leading role in the Indian arts in Scotland having produced and presented a number of festivals and concerts. He is also a GlobalScot and acts as a business ambassador for Scottish Enterprise.

Martha Walsh – Trustee

Martha has 16 years’ experience in finance and financial communications, principally in the City of London. Originally a corporate and then investment banker, Martha transitioned into financial PR in 2010, where she advised UK listed companies, private companies and alternative investment managers, on capital markets communication issues, before a secondment as interim head of investor relations and communications at a FTSE 250 client. She is now a Partner at Charlotte Street Partners, a strategic communications consultancy, where she provides corporate and financial PR advice to the firm’s clients.