On 12 December 2025, the Financial Conduct Authority published a Final Notice imposing a fine of £44,078,500 on Nationwide Building Society for inadequate anti-financial crime systems and controls between October 2016 and July 2021. For the key takeaways from this case, as well as the key findings, please see our latest Notice in a Nutshell briefing here. All of our publications in this series can also be found here.