Mark Clayton Appointed as COO at Triodos Bank UK
By Lauren Towner · 9 August 2024

Triodos Bank UK has confirmed the appointment of Mark Clayton as Chief Operating Officer (COO). Triodos provides specialist sustainable finance for businesses and organisations committed to positive cultural, social or environmental impact.
In his role, Mark will oversee customer operations and financial crime, large project implementation, facilities management, and ICT services. Mark's extensive experience in the banking sector will be instrumental in driving Triodos Bank's mission and operations forward.
Bevis Watts, CEO, Triodos Bank UK said: “Mark has shown a great understanding of this business, our customers and the opportunities for growth. We feel he is a great fit and the right person to shape the future of operations at Triodos Bank UK. We have big ambitions for our organisation, and I'm confident that Mark's knowledge will be instrumental for our success in the rapidly changing banking landscape.”
Mark brings with him a wealth of experience, having previously served as COO at Unity Trust Bank, another member of the Global Alliance for Banking on Values (GABV). Prior to that, Mark had a 23-year career at HSBC, where he held various senior roles and led large teams within the retail banking division. Notably, he was Head of Premier Distribution, where he spearheaded the strategic growth of the Retail Premier and international business. Mark also holds a degree in financial services in association with the Chartered Institute of Bankers.
Speaking about his appointment, Mark Clayton said, "Having transitioned away from the mainstream banking sector a few years ago, I've found fulfilment in roles where values steer decision-making. I look forward to leveraging Triodos' influential platform to drive meaningful change through sustainable banking practices."
Triodos Bank is well-known for financing pioneers in sustainability. The bank’s customers include the likes of Neal’s Yard Remedies, Riverford Organics, Forest e-bikes and Ecotricity. For full transparency, every organisation that Triodos lends or invests in is published on a map found at www.knowwhereyourmoneygoes.co.uk.
Since 2015, Triodos Bank has been certified as a B Corporation, most recently recertifying in the top 5% of scores with 131 (a minimum score of 80 is required for B Corp status).
Mark's appointment comes at a time of great opportunity and growth for Triodos Bank. His experience and dedication to values-driven banking will ensure that Triodos continues to lead the way in sustainable finance, supporting businesses and organisations that are committed to making a positive impact on society and the environment.
About the companies
Triodos Bank
Website · 13 stories on FF News since 2021
Previously on FF News:
- Triodos Bank Leads Financial Sector with B Corp Recertification Under Stricter New Standards 22 October 2026
- Kaleidofin Capital Private Limited Raises USD 3 million (debt) from Triodos Investment Management 3 September 2025
- Triodos Bank Successfully Priced EUR 300 Million of Green Senior Preferred Notes 28 August 2025
Companies in this story: Triodos Bank
People in this story: Bevis Watts, Mark Clayton