Miller will take over from Des Moore in 2026, after Moore’s eight years of “impactful leadership and transformation”, The Cumberland said.
Miller joins from Newcastle Building Society, where he has worked since 2017, most recently as chief commercial officer for just under a year.
He initially joined as chief customer officer and then worked at Newcastle Strategic Solutions, the savings management platform of Newcastle Building Society, and as director of Newcastle Financial Advisors, also part of the mutual.
Prior to that, he was director of distribution at Monmouthshire Building Society for around a year. Before that, he was retail director at Virgin Money for around five years.
Miller has also held senior roles at Northern Rock, RBS International and NatWest.
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The Cumberland said Miller’s role in projects including The Future of Rural Retail and the government’s High Street Task Force made him a “natural fit” for The Cumberland.
The mutual added that Miller was known for his “passion for customer relationships and his hands-on work supporting high streets and rural communities” and brought “invaluable experience in ensuring traditional branch services remain strong”.
Miller said: “I’m honoured to step into this role and am grateful for the opportunity to work alongside Des during this transition. His leadership has shaped The Cumberland’s success, and I look forward to building on that strong foundation as we move forward together.
“The Cumberland will continue to evolve, embrace new technologies, and adapt to modern challenges. But at its core, the commitment remains unchanged; human relationships, community trust, and care for members will always be the heartbeat of what we do.
“We need to provide those human interactions to offer tailored guidance and to put a face to a name.”
The Cumberland said it was investing in its “largest ever digital transformation programme to modernise its core technology platform to ensure it continues to meet evolving customer needs”.
The banking solutions will give customers greater flexibility in how they manage their finances, whether that is online, by phone or in branch.
