Our Board
Meet our Board who are collectively responsible for the management, direction and performance of Principality Building Society.
The role of our Board members
The Board of Directors is the overall governing body of Principality Building Society. The Board is collectively responsible for the management, direction and performance of Principality Building Society to ensure its long-term success.
Our Board includes Executive and Non-Executive Directors. Our Executive Directors lead the executive team managing daily operations. Our Non-Executive Directors make sure we operate correctly by challenging the decisions of our executive directors.
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Debra Williams
Non-Executive Director | Board member since September 2019
Chair of Remuneration Committee
I’m a Member of Board Risk Committee and Governance and Nominations Committee. My experience in the Fintech and E-commerce arenas enable me to make a positive contribution to the Society’s ongoing digital transformation, supporting the continued delivery of stand-out experience for our Members.
During my career, I have held a range of Executive and Non-Executive Director positions and have worked in consultancy roles in the UK, Europe and the US. I spent 5 years at the Britannia Building Society, and held senior roles at NCR, Tesco Compare and Confused.com.
I also hold roles as a Non-Executive Director of Co-Op Insurance. I am Chair of GCRE Ltd, and a Director of Awen Consulting Services Ltd. I am also a proud ambassador for Tŷ Hafan. I am Pro-Vice Chancellor of the University of Wales Trinity St David.
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Iain Mansfield, LLB (Hons), FCA
Chief Executive Officer | Board member since December 2019
I was appointed Chief Executive Officer in November 2025. Prior to that I was appointed as Chief Operating Officer in October 2017 and Chief Financial Officer in July 2022. I joined the Board in December 2019. I am also a Director and Chair, Nemo Personal Finance Ltd (a group company). I am a Chartered Accountant with more than 20 years' experience across retail banking and start-up and private equity owned consumer financial services businesses in the UK.
I also hold the role of Non-Executive Director at Hafren Dyfrdwy and Vice Chair of the Confederation of British industry (CBI) Wales.
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Jonathan Baum, MBA, MA, Senior Independent Director
Non-Executive Director | Board member since July 2021
Chair of Board Risk Committee and Senior Independent Director.
I’m a Member of Audit Committee and Governance and Nominations Committee. My experience in senior risk leadership roles across retail, business, wealth and asset finance sectors and in risk leadership roles enable me to have oversight of current and emerging risks that will ensure that the Society continues to be successful and sustainable for its Members.
I have 30 years of experience in domestic and international banking within globally renowned organisations including Lloyds Banking Group, Barclays Bank plc and GE Capital. I was a Non-Executive Director for TransUnion UK and Vanquis Bank. I am also a Non-Executive Director at FCE Bank plc (trading as Ford Credit).
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Shimi Shah
Non-Executive Director | Board member since May 2023
I am a member of Audit Committee, Remuneration Committee and Governance and Nominations Committee.
I have been actively involved in building and running businesses, incubators, innovation policy, fund management, and venture capital for over 20 years across the US, Europe, and the Middle East and am also a prolific and active Angel Investor across those territories in my own right. During my career I have built and managed significant investments and portfolios and served with some of Europe’s leading Private Equity firms with investments in over 50 companies.
I am highly experienced in mergers and acquisitions, fund raising, IPOs and exits. I have extensive board experience (listed companies through to SMEs and start-ups) and currently serve on three boards in a non-executive capacity. I am known globally as an innovation policy and incubator and corporate governance expert and provide consulting services in this area to SMEs and government establishments across EMEA. I am also well regarded in the field of board evaluations and assessments, and work with institutions, family offices, and funds to design, build, and leverage boards to becomes effective in their objectives.
I am on the Board of Carousel Solutions. I am also on the advisory boards for the North East Fund (NEF), Miratech Limited and HaysMckintrye and an active member of the Young President’s Association (YPO), currently serving on the Chapter Committee.
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Simon Moore
Chair, Non-Executive Director | Joined the Board in January 2024, elected Chair in April 2024
Chair of Governance and Nominations Committee. Member of Remuneration Committee.
I have over 30 years in the financial sector working for Lloyds Banking Group, Chase Manhattan Bank, ABN AMRO and Barclays Bank, including Managing Director for Barclays Commercial Wales and the South West. I serve as chair of another leading mutual organisation, LV=, the UK life assurance company, as well as serving on a number of other boards.
I am responsible for leading the work of the Board, ensuring the Board operates effectively in setting the strategy, overseeing the performance and setting the risk appetites of the Society. I am also responsible for ensuring robust succession plans are in place, that the Society maintains the highest standards of corporate governance and that we have an open and transparent culture.
My experience as public, private and mutual company board chair and career in the financial sector, with a grounding in regulation, governance, risk, compliance, financial performance, customer service, executive remuneration and member relationships, will give me the oversight required as a member of the board and to contribute to the continued success of the Society. -
Karen Maguire LL. B, ACA
Non- Executive Director | Joined the board in September 2024
Chair of Audit Committee.
I’m a Member of Board Risk Committee and Governance and Nominations Committee.
I am a qualified accountant (ACA) with a degree in Law. I trained and qualified with KPMG in South Wales, gaining experience across audit, risk management, internal audit and governance and across a broad industry range including financial services. Executive roles have included Head of Risk and Head of Investor Relations at Admiral Group Plc and Chief Financial Officer for Confused.com, Penguin Portals and ZPG Group.
My career in professional services gives me a wide experience in financial performance, regulation, governance, risk, and compliance, whilst my experience in the financial services sector means that I am focused on customer outcomes and digital transformation.
I am on the Council of Clifton College Group where I chair the Finance and Operations Committee and am a member of Audit, Risk and Compliance Committee. -
Maria Timon Samra
Non-Executive Director | Joined the Board in November 2024
I’m a Member of Board Risk Committee, Remuneration Committee and Governance and Nominations Committee.
Motivated by purpose, Principality’s mutual ethos and commitment to community strongly resonate with me. I am committed to providing effective stewardship and supporting the Executive team and colleagues across the Society, with a particular focus on the successful delivery of the Society’s ambitious transformation programme designed to secure Principality’s long‑term, sustainable success.
As a Non‑Executive Director, I serve on the Board Risk Committee, the Governance & Nominations Committee, and the Remuneration Committee.
My 35+ year career has involved leading and delivering complex, digitally enabled business transformation and cultural change programmes both locally and internationally. This experience enables me to support the Society as it navigates the challenges of cybersecurity and the opportunities and risks presented by the rapid emergence of Artificial Intelligence. I also bring insights from my role as Interim CEO at Charity Digital, an organisation dedicated to supporting resource‑constrained UK charities facing similar digital and organisational challenges.
My executive leadership background includes roles in Wales such as CEO and former Chair and Trustee of Tŷ Hafan Children’s Hospice, and Interim CIO at Dŵr Cymru Welsh Water. Earlier roles include Managing Director at KPMG, Digital Transformation Director at Barclaycard, and Partner/Director roles at Arthur Andersen, Unisys, and Professional Software Systems. I also serve as a Director of Timon Samra Associates Ltd, specialising in digital and cultural transformation. A recipient of the Institute of Directors’ Director of the Year award in 2021, I bring insight into cybersecurity, AI‑driven change, and the challenges facing purpose‑driven organisations.
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Garry Stran
Non-Executive Director | Board member since January 2025
I'm a Member of Audit Committee, Board Risk Committee and Governance and Nominations Committee.
I have over 35 years of executive experience across the financial services sector, with a focus on credit risk management and operational and cultural transformation. I have held senior and non-executive level positions at Nationwide, PCF Bank, WH Ireland and Computershare Loan Services.
I have a proven track record of supporting organisations to execute strategic transformational change, with a focus on technology and customer value.
In addition to extensive experience in shaping strategy, driving digitalisation and modernising culture, I have held significant governance related roles as both a Member and Chair of Audit, Risk Management, Credit and Remuneration Committees across listed and privately owned organisations.
I am a Non-Executive Director and Chair of the Risk Committee of the financial services subsidaries of the Very Group.