Published: August 28, 2026 at 8:36 am
The CEO and co-founder of Atom Bank seems set to be replaced in the coming weeks.
Mark Mullen co-founded Atom as Britain’s first digital-only bank with Metro Bank founder Anthony Thomson in 2014. Thomson stepped down as chairman in 2018 and Mullen was featured on our Founder 250 list this year.
Following what it called ‘pre-IPO’ funding rounds in previous years, this summer the North East firm worked with advisers at Jefferies on a sale process which attracted interest from several private equity firms and at least two building societies.
It had hoped that the auction would value it between £600m and £1 billion, but no firm bids were received and it was abandoned in June.
Sky News reported that Mullen is expected to be replaced on an interim basis by Andrew Marshall, the company’s CFO. Now Atom has responded to those reports.