A senior banking regulator has addressed Members of Parliament regarding significant potential changes to United Kingdom banking laws that could substantially impact financial institutions across the nation. Katharine Braddick, who is poised to become the new deputy governor for prudential regulation at the Bank of England and chief executive of the Prudential Regulation Authority in June 2026, appeared before the Treasury Committee to discuss sector oversight.
Focus on Leverage Ratio Buffers
During the committee session, questions centered on leverage ratio buffers, which are capital restrictions that limit operations for building societies like Nationwide. These regulations mandate that lenders maintain specific capital reserves relative to their assets to ensure stability if investments or loan repayments fail.
Industry Concerns and Potential Impact
The Building Societies Association has previously informed MPs that reforming these capital rules could unlock considerable potential within the sector. Sarah Harrison, chief executive of the association, explained that UK-specific requirements, known as the leverage ratio buffer, often force building societies to hold more capital than necessary based on their risk profiles.
Harrison stated: "In practice, this means some of our building society members are obligated to retain significantly more capital than their risk portfolios would typically warrant." She highlighted that Nationwide estimated that without the buffer, the organisation could potentially release an additional £30 billion in capital for business or mortgage lending.
Regulator's Cautious Stance
When asked for her perspective on easing these regulations, Katharine Braddick declined to commit to any position. She told the committee: "If you do not mind, I will resist being drawn on that question until I am in role and have access to better technical information." This cautious approach underscores the complexity of prudential regulation and the need for thorough analysis before any policy shifts.
Nationwide's Position and Sector Growth
Nationwide Building Society has previously commented on the potential benefits of reforming capital regulations. A spokesperson for the mutual stated: "Reducing leverage buffers would support additional lending to both individuals, via mortgage lending, and SMEs, through business loans."
The spokesperson added: "With the Government's ambition to double the size of the mutuals sector, leverage ratio reform would support the sector's growth potential, where current leverage requirements can often constrain further lending activity for lower risk providers." This highlights how regulatory adjustments could align with broader economic goals, fostering growth in the mutual financial sector.
Broader Implications for UK Banking
The discussion before the Treasury Committee signals ongoing debates about balancing financial stability with economic expansion. Changes to leverage ratio buffers could influence not only Nationwide but also other building societies and financial providers, potentially reshaping lending practices across the UK.
As Katharine Braddick prepares to assume her new roles, her forthcoming analysis and decisions will be closely watched by industry stakeholders, policymakers, and consumers alike. The outcome could determine whether billions in capital are redirected toward mortgages and business loans, impacting housing markets and small enterprise funding nationwide.



