Our Board
Monzo Bank Holding Group Limited (MBHG) was formed on 6 April 2023, and is the parent company of the Monzo Group, which includes Monzo Bank Limited (MBL).
We currently use a mirrored board structure, meaning the directors appointed to the MBHG Board and the MBL Board are the same (with the exception of the Executive Directors). Since 6 April 2023, new directors have joined both boards simultaneously, as the strategic activities of both companies at present are closely aligned. Prior to this date, directors held a single appointment to the MBL Board.
Learn more about our Board members below.
Gary Hoffman
Chair of the MBHG and MBL Board of Directors and Independent Non-Executive Director
Gary joined Monzo on 1 February 2019 and also chairs the Group Nomination and Governance Committee. He started his career at Barclays where he stayed for 25 years. He took on several senior roles before becoming the CEO of Northern Rock, steering them successfully through the 2008 financial crisis.
He then went on to become the CEO of NBNK Investments and later CEO for Hastings Insurance Group, which he led through an IPO, as well as serving as Non-Executive Chair of Visa Europe and Non-Executive Director of Visa Inc. Gary has extensive experience in financial services including retail banking, insurance and consumer lending. He’s led significant growth stories and turnarounds while innovating along the way.
Diana Layfield
Group Chief Executive Officer and Executive Director
Diana is the Group CEO of Monzo. She is a highly experienced technology and financial services leader with a career spanning three decades. She has consistently driven innovation and growth across a wide range of organisations, from founding a tech start-up to scaling global technology and financial services institutions. During her nine years at Google, as General Manager of Search International & Growth, she led Searchʼs global Growth and Internationalisation teams, driving differentiated growth and scaling through AI deployment. As Vice President, Next Billion Users and Product Management, she led the development of products for emerging markets, including the design, build and launch of Tez (GooglePay India) which scaled to over 200 million users and over $1 trillion in annual transactions. Before Google, Diana served as CEO for the Africa Region at Standard Chartered Bank, where she was responsible for wholesale, investment, and consumer banking across 27 countries.
Tom Oldham
Group Chief Financial Officer and MBHG Executive Director
Before joining Monzo, Tom served as Chief Investment Officer at Mombak, a fund manager focused on generating carbon credits through reforestation projects in the Amazon. Previously, he was the Global Head of Financial Planning & Analysis (FP&A) and Procurement at Nubank during a period of hypergrowth, in which the company increased its customer base tenfold, launched multiple products—including personal loans, investment services, and cryptocurrency—and expanded internationally.
Prior to his tenure at Nubank, Tom spent five years at Kraft Heinz, a consumer goods company backed by 3G Capital and Berkshire Hathaway, where he held various roles in Finance, Sales, and General Management. Tom began his career in commodities trading with Swiss trading group Glencore, based in Beijing, China. He holds an undergraduate degree from the University of Cambridge and an MBA from London Business School.
Fiona McBain
Senior Independent Non-Executive Director
Fiona joined our Board on 1 January 2020. Sheʼs the Boards' Senior Independent Director (SID) and Chair of our Group Audit Committee. She has more than 40 years of regulated retail financial services experience, in industry and as an auditor, both in the UK and US.
Fiona brings wide-ranging strategic and operational experience at both the board and senior executive management level. Her previous external appointments include serving as a Non-Executive Director of Direct Line Insurance Group plc, where she chaired the Investment Committee. She was also Chief Executive of Scottish Friendly Assurance Society Ltd, operating across the UK and the Republic of Ireland for 11 years.
Delfin Rueda Arroyo
Independent Non-Executive Director
Delfin joined our Boards in June 2025. He brings over 30 years of experience in finance, risk management, governance, and operations within the financial services sector.
Delfin's career began in consulting and investment banking, with positions at Andersen Consulting, Salomon Brothers, UBS, and JPMorgan. He was Chief Financial Officer and Vice-Chair of the Executive Board and Management Board at ING Insurance and NN Group, and Chief Financial Officer, Chief Risk Officer and a member of the Management Board at Atradius.
Currently, Delfin serves as a non-executive director at Allfunds, FlowTraders and Achmea Pensions & Life, continuing to leverage his vast expertise to drive strategic growth and governance excellence.
Eileen Burbidge, MBE
Investor Non-Executive Director
Eileen joined our Board on 21 April 2015 as a representative for Passion Capital, our major shareholder. As well as co-founding Passion, Eileen also served as HM Treasury’s Special Envoy for Fintech and was previously Chair of Tech Nation, and a member of the Prime Minister’s Business Advisory Group.
Eileen holds a bachelors degree in Computer Science from the University of Illinois at Urbana-Champaign and has extensive technical knowledge from a broad range of industries including mobile, internet/digital technology, consumer and enterprise software development, and communications. Her particular areas of expertise include product, business, market, and commercial development.
Fields Wicker-Miurin, OBE
Independent Non-Executive Director
Fields is our Group Remuneration Committee Chair. She brings a wealth of experience from her international executive career in financial services, venture capital and strategic consulting. For almost 30 years she has served as a non-executive director (including Senior Independent Director and Board Committee Chair) across a number of international banks, listed fintechs and other companies from a wide range of sectors in the UK, France, Sweden and India. During this period, Fields has held prominent positions, either as Chair or a member of remuneration, audit, risk, sustainability and investment committees, particularly within listed environments.
Fields has previously served on the Board of BNP Paribas (Paris), where she was a member of the Board Audit, Remuneration and Risk and Compliance Committees. She is currently appointed to the Board of Scor se, one of the worldʼs largest reinsurance companies based in Paris, where she has chaired the Remuneration and Sustainability Committees. Outside of her business interests, Fields is Chair of the British Equestrian Federation and Deputy Chair of the Royal College of Art.
Jambu Palaniappan
Independent Non-Executive Director
Jambu joined our Boards in September 2025. He brings a wealth of experience in consumer technology and globally scaling businesses.
Alongside Jambu's appointment to the Boards, Jambu is the CEO of Checkatrade, a tech-enabled British business that connects 100,000 tradespeople with millions of consumers searching for quality fixes and upgrades to their homes. Before that, Jambu held senior positions at OMERS Ventures, a Canadian venture capital firm, and at Uber and Uber Eats, where he was among the first 100 employees globally, and helped lead a lot of their global expansion. He is also currently a Non-Executive Director of Just Eat.
Karen Peacock
Independent Non-Executive Director
Karen joined our Boards in October 2025. She brings over 25 years of experience in technology leadership, driving strategy, innovation, and growth. Karen is the former CEO of Intercom and the former General Manager and Senior Vice President at Intuit where she and her team built one of the world's largest global SaaS businesses.
Alongside her appointment to the Boards, Karen also serves as the lead independent director at Dropbox, and as a Non-Executive director at IDEXX Laboratories. Karen holds a BA in Applied Mathematics (with a focus on Decisions Systems and Machine Learning) from Harvard and an MBA from Stanford.
Lizzie Runham
Independent Non-Executive Director
Lizzie joined our Board on 1 March 2022. She brings more than 20 years of experience helping organisations thrive across highly complex sectors including financial services, pharmaceutical and technology. In addition to the UK, she has a depth of experience in Africa, the Middle East & Asia where she has spent the last 15 years. Her area of specialism is HR strategy and operations.
Spencer Lake
Independent Non-Executive Director
Spencer joined our Boards in October 2025. He brings a depth and breadth of experience in the financial services industry, particularly within capital and debt markets.
Spencer spent 10 years at HSBC where he was a Group General Manager and Vice Chairman of HSBC’s Global Banking and Markets Division, having previously run its Global Debt Origination, Markets, and Global Capital Financing Divisions, which encompassed HSBC’s balance sheet and Investment Banking products. Spencer also spent 17 years at Merrill Lynch, working in various leadership roles in New York, Hong Kong and London, and was Chair to the board of the International Capital Market Association from 2010 to 2016.
Alongside his appointment to the Boards, Spencer is a founding partner of 13books Capital, a UK-based venture capital fund, investing in and helping early-stage financial technology companies. In addition, Spencer sits on the board of Duco Technology.
Valerie Dias
Independent Non-Executive Director
Valerie joined our Board on 1 June 2021 and became Chair of our now Group Board Risk Committee in January 2022. She has worked in the financial services sector for more than 25 years in various leadership roles.
Valerie brings a wealth of finance, risk, governance and operational experience, having worked as a senior executive at Visa Europe, first as their Chief Financial Officer and, then, as their Chief Risk Officer.
Vinay Yarlagadda
Investor Non-Executive Director
Vinay joined our Board in February 2026. Vinay brings extensive experience in the fintech and applications sectors, having spent nearly a decade leading global investments in high-growth technology companies.
He is a Managing Director in GIC’s Technology Investment Group and a member of the firm’s investment committee, where he focuses on backing companies across fintech, applications and physical AI. He has been a long-term partner to several fintech platforms, including Stripe, Ramp, Affirm, and Checkout.com.
Alongside his appointment to the Board, Vinay holds board observer roles at Wealthsimple, Parafin, and Altruist.
TS Anil
Vice-Chair and Non-Executive Director
TS has been Vice-Chair of the Board since 1 March 2026. As our former Group Chief Executive Officer, he brings exceptional experience and understanding of Monzoʼs key strategies and product offerings to support his current role as Non-Executive Director. He had a long career across financial services and leading payments businesses in markets around the world, heading up global teams. He has a wealth of experience launching new products, developing innovative payment technologies and taking existing businesses to new growth opportunities.
Anu Hariharan
Investor Non-Executive Director
Anu joined our Board in February 2026. Anu brings deep expertise in the tech and fintech sectors, having spent much of her career advising and investing in high-growth companies across the globe.
She’s the Founder and Managing Partner of avra, where she helps growth-stage founders scale their companies. Before starting avra, Anu was the co-founder and Managing Director of Y Combinator’s Growth Fund. There, she led investments in companies like Brex, Faire, Gusto, and Whatnot. She also spent time as a partner at Andreessen Horowitz, working with the leadership teams at Airbnb and Instacart.