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Unit Trusts: Popular Investment Vehicles in the UK

Unit Trusts: Popular Investment Vehicles in the UK

07/28/2025
Felipe Moraes
Unit Trusts: Popular Investment Vehicles in the UK

Investing can feel overwhelming, but unit trusts offer a structured, accessible way to pursue financial goals. By pooling funds under professional management, these vehicles simplify diversification and risk management for both retail and institutional investors.

What Are Unit Trusts?

Unit trusts are a form of collective investment scheme established under a trust deed. They pool investor money into a single fund, managed by a professional fund manager, and allocate capital across equities, bonds, property, gilts, and cash equivalents.

Rather than owning individual assets, investors hold “units” representing a proportional share of the underlying portfolio. Units are created or cancelled in line with investment flows, and their price reflects the fund’s net asset value (NAV), recalculated daily based on market movements.

The legal structure involves three parties: the manager (who makes investment decisions), the trustee (who safeguards assets), and the unit holders (beneficiaries of the trust). While investors do not directly control underlying assets, they benefit from expert oversight and diversification.

Types of Unit Trusts

  • Authorised Unit Trusts (AUTs): Regulated by the Financial Conduct Authority (FCA) under the COLL rules, offering robust investor protection.
  • Unauthorised Unit Trusts (UUTs): Less common, operating without the same regulatory framework.
  • Specialist Trusts: Focusing on specific asset classes, sectors, regions, or strategies such as growth, income, or tax-efficient investments.

Related vehicles include investment trusts (public companies), Venture Capital Trusts (VCTs), and infrastructure trusts, each carving out niche segments of the market.

Historical Evolution and Market Growth

The UK’s first unit trust, the “First British Fixed Trust,” launched in 1931 by M&G, ushered in collective investing for everyday investors. By 1939, roughly 100 unit trusts managed £80 million, reflecting rapid early adoption.

Fast forward to 2024, the UK investment trust market (including unit trusts) reached approximately £1.5 billion, having grown at a 2.8% compound annual growth rate (CAGR) from 2019 to 2024. In 2023, a slight downturn was followed by a 5.5% rebound in 2024. While high inflation and interest rates present challenges, long-term prospects remain positive, driven by investor demand for managed exposure and diversification.

Leading Players and Popular Funds

  • 3i Group plc commands a 38.1% market share, followed closely by Scottish Mortgage Investment Trust with 32.3%.
  • Top-performing funds in 2025 include:
    • Scottish Mortgage Investment Trust

    Conventional equity trusts dominate, but alternative vehicles—private equity, infrastructure, and venture capital trusts—are gaining traction among adventurous investors.

    Key Advantages and Mechanics

    Unit trusts combine professional management with diversification benefits, making them ideal for those seeking a hands-off approach without sacrificing exposure to multiple asset classes.

    • Liquidity: Units can be bought or sold daily at NAV-based prices, with creation and cancellation mechanisms balancing supply and demand.
    • Diversification: Pooling enables access to a broad portfolio that few individuals could replicate alone.
    • Adaptability: Managers actively adjust holdings within the fund’s objective to navigate market cycles and capture opportunities.

    Risks and Considerations

    While unit trusts smooth out individual asset swings, they remain sensitive to market volatility. High inflation and interest rates can compress returns, and passive investment structures may lock-in underperforming assets during downturns.

    Investors should weigh fees, performance track records, and manager tenure when selecting a trust and remain vigilant to shifts in economic conditions that affect portfolio valuations.

    Regulation and Investor Accessibility

    Authorised unit trusts operate under the FCA’s Collective Investment Schemes Sourcebook (COLL), ensuring standards such as independent trusteeship, daily pricing, and asset restrictions. Unauthorised trusts lack this framework and cater to specialist or institutional needs.

    Designed for both retail and institutional investors, unit trusts provide a gateway to diversified, professionally managed portfolios without requiring extensive market knowledge or time commitment.

    Comparing Unit Trusts and Investment Trusts

    This comparison helps investors decide whether they prioritise liquidity and transparent pricing or potential trading discounts and reinvestment strategies.

    Future Outlook and Trends

    Unit trusts have delivered steady growth, but face rising competition from exchange-traded funds (ETFs) and other passive products. As regulatory scrutiny intensifies and investor preferences evolve, trust managers must demonstrate value through performance, cost efficiency, and innovation.

    Nonetheless, unit trusts remain a core choice for UK investors seeking balanced, professionally managed portfolios that adapt to changing conditions while offering the potential for long-term wealth accumulation.

    Practical Tips for Investors

    1. Define objectives: Align a trust’s investment strategy with your financial goals, risk tolerance, and time horizon.

    2. Assess fees: Lower ongoing charges can compound into significant savings over years; compare total expense ratios across similar funds.

    3. Review performance: Look beyond short-term returns; examine three- to five-year track records and manager consistency.

    4. Understand risks: Read the fund’s prospectus to gauge exposure to volatile sectors, interest rate sensitivities, or concentration in specific regions.

    5. Stay informed: Regularly monitor economic indicators and fund updates to ensure your investment thesis remains valid as markets evolve.

    By combining thorough research with the diversification benefits of unit trusts, investors can build resilient portfolios capable of navigating uncertainties and capturing growth opportunities. Embrace these vehicles as part of a disciplined, long-term wealth-building strategy, and let professional managers do the heavy lifting while you focus on achieving your financial aspirations.

Felipe Moraes

About the Author: Felipe Moraes

Felipe Moraes