The Financial Conduct Authority launched the Mills Review on 27 January 2026. The review examines how advances in artificial intelligence could transform retail financial services in the City of London—Britain's financial capital and Europe's largest financial centre.

This isn't regulatory theatre. The Mills Review addresses fundamental questions about AI's impact on trading, portfolio management, financial advice, and ultimately, employment in London's signature industry.

Mills Review Context: Financial Services AI

  • 27 January 2026 - Mills Review formally launched
  • Retail financial services focus - Consumer-facing AI transformation
  • FCA-led examination - Regulatory authority directing inquiry
  • Financial services leads AI adoption - Substantially outpaces other UK sectors
  • City of London employment impact - Core economic sector transformation

What the Mills Review Examines

The Mills Review Call for Input Engagement Paper poses questions on future evolution of AI technology in financial services. The FCA seeks industry input on how AI advances will reshape retail finance operations, customer interactions, and service delivery.

Key Review Questions

  • How will AI transform retail financial services delivery models?
  • What opportunities and risks does AI present for consumers?
  • How should regulation adapt to AI-driven financial services?
  • What workforce implications arise from financial services AI adoption?

These questions acknowledge that AI transformation isn't hypothetical—it's underway. The review examines how to manage transformation already reshaping the City of London.

Financial Services Leads UK AI Adoption

The Treasury Committee published a paper stating the financial services sector was substantially outpacing other sectors in AI adoption. This finding contextualises why the FCA prioritises AI examination—financial services represents the UK's AI adoption frontier.

Why Financial Services Adopts AI Fastest

  • Digital infrastructure: Financial services already operate on digital systems suitable for AI integration
  • Data abundance: Massive transaction and customer data sets train AI models effectively
  • Competitive pressure: First-mover advantages in algorithmic trading and automated services
  • Regulatory acceptance: FCA historically supportive of financial technology innovation
  • High value processes: Even marginal AI efficiency gains generate substantial profit improvements

These factors position financial services 12-24 months ahead of other UK industries in AI deployment and workforce impact.

City of London Trading Automation

Algorithmic trading already dominates City of London equity markets. Current estimates suggest 60-70% of trading volume originates from algorithmic systems rather than human traders.

Current Trading Automation

  • High-frequency trading: AI systems execute millions of trades per day at microsecond speeds
  • Market making: Automated systems provide liquidity across securities
  • Arbitrage: AI identifies and exploits price discrepancies faster than humans
  • Order routing: Algorithmic systems determine optimal trade execution venues

These applications eliminated traditional trading floor roles over the past decade. The Mills Review examines next-wave automation targeting roles previously considered safe from AI disruption.

Retail Financial Services Transformation

The Mills Review specifically focuses on retail financial services—consumer-facing operations. This includes banking, investment advice, mortgage lending, insurance, and wealth management.

AI Applications in Retail Finance

  • Robo-advisors: Automated portfolio management replacing human financial advisors
  • Credit assessment: AI underwriting decisions replacing loan officers
  • Customer service: AI chatbots handling routine inquiries and transactions
  • Fraud detection: Real-time AI monitoring replacing human review
  • Personalised products: AI-driven customisation of financial offerings

Employment Impact

These applications directly eliminate City of London roles:

  • Financial advisors replaced by robo-advisory platforms
  • Loan officers supplanted by AI credit assessment
  • Customer service representatives displaced by chatbots
  • Compliance officers reduced as AI monitors transactions
  • Back-office processing staff automated away

The Mills Review examines whether regulatory changes should slow, accelerate, or reshape this transformation.

Portfolio Management Automation

Automated portfolio management—robo-advisors—represents the most visible retail finance AI application. These systems manage investments with minimal human oversight, charging fees 70-80% lower than traditional financial advisors.

How Robo-Advisors Work

  • Algorithms assess customer risk tolerance and financial goals
  • AI constructs diversified portfolios matched to customer profiles
  • Automated rebalancing maintains target asset allocations
  • Tax-loss harvesting optimises tax efficiency
  • Performance monitoring identifies necessary adjustments

Major UK financial institutions now offer robo-advisory services, with assets under management growing 40-50% annually. Traditional financial advisors face existential pressure as clients migrate to lower-cost automated alternatives.

AI-Driven Financial Advice Regulation

The Mills Review addresses fundamental regulatory questions about AI financial advice. Current regulations assume human advisors making decisions and explaining recommendations. AI systems operate differently.

Regulatory Challenges

  • Explainability: Can customers understand AI investment decisions?
  • Accountability: Who's responsible when AI advice causes customer losses?
  • Bias: Do AI systems treat all customer demographics fairly?
  • Suitability: How do regulators assess AI advice appropriateness?

These questions lack clear answers. The Mills Review seeks industry input on appropriate regulatory frameworks for AI-driven financial services.

Treasury Committee AI Inquiry Context

The Treasury Committee launched an inquiry in 2025 to examine opportunities and risks posed by AI for the UK financial services sector. The Committee published findings on 20 January 2026—one week before the Mills Review launch.

Key Treasury Committee Findings

  • Financial services substantially outpaces other sectors in AI adoption
  • Current regulatory frameworks inadequate for AI-driven financial services
  • Significant workforce displacement anticipated in coming years
  • UK risks losing competitive advantage without coordinated AI strategy

The Mills Review represents FCA response to Treasury Committee conclusions, translating findings into specific regulatory examination.

Employment Implications for City of London

The City of London employs approximately 540,000 workers in financial services. AI automation threatens substantial portions of this workforce, particularly in retail financial services.

Roles at Immediate Risk

  • Financial advisors: 15,000-20,000 positions facing robo-advisor competition
  • Mortgage brokers: 8,000-12,000 roles subject to AI underwriting automation
  • Insurance underwriters: 10,000-15,000 positions vulnerable to AI assessment
  • Customer service: 25,000-30,000 roles displaced by chatbots and automation
  • Back-office operations: 40,000-50,000 processing jobs eliminated

Combined, these categories represent 100,000-130,000 City of London jobs—roughly 20-25% of financial services employment—facing AI-driven displacement over the next 5-7 years.

Competitive Dynamics: London vs Other Financial Centres

The Mills Review occurs amid competition between global financial centres. New York, Singapore, Hong Kong, and Frankfurt all pursue financial services AI leadership.

London's Advantages

  • Regulatory innovation: FCA historically supportive of fintech development
  • Talent pool: Concentration of financial services and technology expertise
  • Legal framework: English law dominates international financial contracts
  • Time zone: Bridge between Asian and American markets

London's Challenges

  • Brexit impact: Reduced EU market access and talent mobility
  • Regulatory uncertainty: AI regulation framework still developing
  • Cost structure: High London operating costs vs competitor cities
  • Infrastructure: Legacy systems requiring expensive upgrades

The Mills Review's findings will influence whether London maintains or loses ground in global financial centre competition.

What the Review Means for Financial Workers

The Mills Review acknowledges that AI transformation is inevitable. The question isn't whether AI reshapes retail financial services, but how regulation manages the transition.

Implications for City Workers

  • Reskilling urgency: Financial services workers must develop AI-complementary capabilities
  • Career path disruption: Traditional progression through financial services roles disappearing
  • Salary pressure: Competition with lower-cost AI services reduces compensation
  • Geographic flexibility: Remote AI systems reduce need for London-based staff

For City of London financial workers, the Mills Review represents official acknowledgement that your profession is transforming fundamentally. Regulatory examination won't prevent AI adoption—it will shape how quickly and thoroughly automation proceeds.

The review's findings, expected later in 2026, will determine whether the FCA prioritises consumer protection (potentially slowing AI deployment) or innovation and competitiveness (potentially accelerating automation and workforce displacement).

Original Source: Financial Conduct Authority

Published: 2026-01-27