Top 10 Asset Management Companies in UK
SUMMARY
performance of one fund. Investors often look for access to shares, bonds, multi-asset portfolios, retirement products or specialist funds. The firms that manage these investments can vary a lot in size, their investment approach, fees and the kinds of clients they work with.
For those who are researching the Top 10 Asset Management Companies in the UK this updated list features firms more than the last version. It does not include BlackRock, Vanguard, Waystone, Legal & General Investment Management, Royal London Asset Management, Fidelity International, HSBC Asset Management, Artemis Fund Managers, Schroders or Scottish Widows.
The ranking is based on the Investment Association’s May 2026 data for assets under management in UK-domiciled funds. After removing the ten firms mentioned above the rest are ranked by the amount of fund assets they manage. This is a ranking, by size of UK-domiciled fund assets only. It does not mean the top firm offers the investment returns. The Investment Association also notes that its data excludes internally managed funds to prevent double-counting.
The list includes investment managers and where relevant a fund-management services provider. When revenue and profit figures are provided they refer to the parent group. This is done to avoid misrepresenting the results as coming from an UK fund-management entity.
1. M&G Securities
M&G Securities is the company in this article because of the chosen UK‑domiciled fund‑assets measure. It has a history in British investment management and offers customers a variety of savings and investment products.
| Founded: 1931 (M&G’s investment business origins) |
| Headquarters: London, United Kingdom |
| Latest Revenue: UK fund-management entity revenue not publicly disclosed separately |
| Latest Net Income/PAT: UK fund-management entity net income not publicly disclosed separately |
| UK-domiciled funds under management: Approximately £30.27 billion (May 2026) |
| Main Products/Services: Equity funds, bond funds, multi-asset funds and investment solutions |
Its funds cover asset classes. Equity funds put money into company shares while fixed‑income funds usually buy government or bonds. Multi‑asset funds mix shares and bonds in one portfolio giving investors access to asset classes with a single product.
M&G Securities belongs to M&G plc, a financial services group. Its investment business must not be mixed with the group, which also offers other savings and insurance services. The UK‑domiciled fund figure shown here comes from the Investment Association. It is different from M&G Securities global assets under management.
2. Jupiter Unit Trust Managers
Jupiter is an investment manager that focuses strongly on fund management. By merely following a market index it selects investments based on its research, analysis and investment strategy.
| Founded: 1985 (Jupiter’s investment business) |
| Headquarters: London, United Kingdom |
| Latest Revenue: UK fund-management entity revenue not publicly disclosed separately |
| Latest Net Income/PAT: UK fund-management entity net income not publicly disclosed separately |
| UK-domiciled funds under management: Approximately £27.56 billion (May 2026) |
| Main Products/Services: Actively managed equity, bond and multi-asset funds |
It offers a range of funds that cover markets and investment objectives. Some strategies concentrate on shares while others invest in bonds or mix asset classes. This gives investors and financial advisers options that match their goals and risk tolerance.
Jupiter Fund Management plc releases results for the entire group. Its reported £54 billion in group assets under management at the end of 2025 after net inflows and the purchase of CCLA Investment Management in early 2026. That group figure is not the same as the Investment Associations fund total used for this ranking.
3. Invesco
Invesco provides UK investors with a selection of investment products. Its business offers both managed funds and passive products that aim to follow specific indexes or market segments.
| Founded: 1935 (investment business origins) |
| Headquarters: Atlanta, Georgia, United States |
| Latest Revenue: See Invesco Ltd’s FY2025 annual report for consolidated revenue |
| Latest Net Income/PAT: Net loss of approximately US$174.8 million (FY2025) |
| UK-domiciled funds under management: Approximately £26.55 billion (May 2026) |
| Main Products/Services: Exchange-traded funds, equity funds, fixed-income funds and multi-asset investments |
Exchange‑traded funds or ETFs are a part of the investment market. An ETF can give investors exposure to a bundle of shares, bonds or other assets through one listed product. Investors must still look at an ETFs costs, investment objective and risks before purchasing.
Although Invesco is based in the United States it operates in the UK. Is listed in the Investment Associations ranking of UK‑domiciled funds. Its UK fund figure is not the same as the amount managed worldwide by Invesco.
Invesco Ltd’s 2025 annual report shows a loss of US$174.8 million. This number reflects the group, not only its UK operation.
4. Quilter Investors
Quilter Investors concentrates on creating and managing investment portfolios, multi‑asset solutions. These portfolios combine shares, bonds and other investments with the mix changing based on the strategy and target risk level.
| Founded: 2018 under the Quilter Investors name |
| Headquarters: London, United Kingdom |
| Latest Revenue: UK fund-management entity revenue not publicly disclosed separately |
| Latest Net Income/PAT: UK fund-management entity net income not publicly disclosed separately |
| UK-domiciled funds under management: Approximately £25.98 billion (May 2026) |
| Main Products/Services: Multi-asset funds, managed portfolios and investment solutions for advisers |
Many of its Investors solutions are made for advisers. By picking each investment alone advisers can use a professionally managed portfolio that matches a client’s financial plan and investment goals.
Quilter Investors belongs to the Quilter group, which also runs wealth‑management and financial‑planning businesses. Therefore its group financial results cover more than its Investors.
Quilter reported £141.2 billion in assets under management and administration at the end of 2025. That number covers the group and includes assets managed via its businesses. It is not directly comparable to the fund total used to rank Quilter Investors.
5. BNY Mellon Fund Managers
BNY Mellon Fund Managers is linked to BNY, a financial services company that has a history in investment management, wealth management and asset servicing. It offers products for individuals, financial intermediaries and institutional clients.
| Founded: 1784 (parent company’s origins) |
| Headquarters: New York City, United States |
| Latest Revenue: UK fund-management entity revenue not publicly disclosed separately |
| Latest Net Income/PAT: UK fund-management entity net income not publicly disclosed separately |
| UK-domiciled funds under management: Approximately £25.98 billion (May 2026) |
| Main Products/Services: Equity funds, bond funds, specialist investment strategies and institutional investment solutions |
The larger BNY Investments business unites investment teams that use approaches and have various areas of expertise. Depending on the product a fund may target shares, fixed‑income securities or a specialist investment strategy.
BNY reported about US20.1 billioningrouprevenueandUS5.3 billion in income for 2025. These numbers belong to the BNY group, which offers services, beyond investment management. They should not be shown as revenue or profit earned by BNY Mellon Fund Managers in the UK.
6. Baillie Gifford
Baillie Gifford is an Edinburgh based investment management partnership that has a history of investing in companies across global markets. Its approach often focuses on businesses that the team believes can grow over the term.
| Founded: 1908 |
| Headquarters: Edinburgh, Scotland |
| Latest Revenue: Not publicly disclosed in a directly comparable group-level figure |
| Latest Net Income/PAT: Not publicly disclosed in a directly comparable group-level figure |
| UK-domiciled funds under management: Approximately £24.90 billion (May 2026) |
| Main Products/Services: Global equity funds, growth investing, investment trusts and specialist portfolios |
The firm manages funds and investment trusts that cover regions and investment themes. Some products invest in companies around the world while other products focus on markets or objectives. This makes it relevant to investors looking beyond funds that follow a market index.
Its partnership structure differs from that of a listed asset management group. As a result Baillie Gifford financial disclosures may not be directly comparable with those of companies that publish public market results.
The figure used in this article measures Baillie Gifford UK-domiciled funds, not its global business. The figure is included because of its reported fund assets in the Investment Association May 2026 ranking.
7. Apex Fundrock
Apex Fundrock differs from an investment house that concentrates mainly on selecting shares or bonds. It operates within the broader fund services sector supporting the operation and management of investment funds.
| Founded: Apex Group was established in 2003; Apex Fundrock operates within the wider group |
| Headquarters: Apex Group was established in Bermuda; Apex Fundrock’s UK-domiciled fund ranking relates to its UK fund business |
| Latest Revenue: Not publicly disclosed separately for Apex Fundrock |
| Latest Net Income/PAT: Not publicly disclosed separately for Apex Fundrock |
| UK-domiciled funds under management: Approximately £23.72 billion (May 2026) |
| Main Products/Services: Fund management, fund administration and investment fund services |
The wider Apex Group provides services to asset managers, institutional investors and other financial organisations. These services can cover parts of a fund life cycle, including administration and operational support. The Group business is therefore broader than the UK-domiciled funds listed in the Investment Association ranking.
Apex Group says it was established in Bermuda in 2003 and reports than US$3.5 trillion in assets serviced. Assets serviced are not the same as assets under management; the former can include assets for which a provider performs other services without making the investment decisions.
Apex Fundrock position in this list is based on its reported UK-domiciled fund assets, not on the wider group’s global assets serviced.
8. J.P. Morgan Asset Management
J.P. Morgan Asset Management provides investment products and services to investors, advisers, pension schemes and institutions. Its fund range covers asset classes and markets giving investors options for different financial objectives.
| Founded: 1871 (J.P. Morgan’s historical origins) |
| Headquarters: New York City, United States |
| Latest Revenue: Asset Management segment revenue of US$11.7 billion (FY2025, parent group reporting) |
| Latest Net Income/PAT: Not separately disclosed here for J.P. Morgan Asset Management |
| UK-domiciled funds under management: Approximately £22.40 billion (May 2026) |
| Main Products/Services: Equity funds, bond funds, multi-asset portfolios and institutional investment management |
The business forms part of JPMorgan Chase, an international financial group. Its asset management operations are one part of that wider business, which also includes banking and other financial services.
JPMorgan Chase reported US$11.7 billion in revenue from its Asset Management business segment in 2025. This is a segment level figure from the parent group reporting than revenue earned solely by the UK fund management entity. The firm’s UK-domiciled fund figure is considerably narrower than its business and is used here only for ranking purposes.
9. Janus Henderson Investors
Janus Henderson Investors manages investment products across asset classes and markets. Its strategies include equity investments, fixed income portfolios and specialist funds designed around investment objectives.
| Founded: 2017, following the merger of Janus Capital Group and Henderson Group |
| Headquarters: London, United Kingdom, with a global operating presence |
| Latest Revenue: US$3.10 billion (FY2025, parent group) |
| Latest Net Income/PAT: Refer to the FY2025 annual report for the reported net income figure |
| UK-domiciled funds under management: Approximately £20.81 billion (May 2026) |
| Main Products/Services: Equity funds, fixed-income funds, multi-asset strategies and specialist investments |
The firm was formed in 2017 when Janus Capital Group and Henderson Group combined. Its global business serves investors and institutions while its UK-domiciled funds represent a specific part of that international operation.
Janus Henderson Group plc reported revenue of approximately US$3.10 billion for 2025. The amount includes management fees, performance fees, shareowner servicing fees and other revenue. The UK-domiciled fund assets shown in this article are a measure and should not be confused with Janus Henderson Group worldwide assets under management.
10. THESIS Unit Trust Management
THESIS Unit Trust Management appears in the Investment Association UK-domiciled fund ranking. Manages funds within the UKs regulated investment fund market. Its inclusion here is based on reported fund assets, rather than consumer brand recognition.
| Founded: Not independently verified for the current legal entity |
| Headquarters: Not publicly confirmed in the sources used for this ranking |
| Latest Revenue: Not publicly disclosed |
| Latest Net Income/PAT: Not publicly disclosed |
| UK-domiciled funds under management: Approximately £17.76 billion (May 2026) |
| Main Products/Services: Unit trust management and fund-management services |
Unit trusts pool money from investors. Use it to hold a portfolio of investments. Depending on the fund objective the portfolio may contain shares, bonds or other eligible assets. Investors own units in the fund and the value of those units changes with the value of the underlying investments and any applicable charges.
The available ranking provides a basis for including THESIS but the public information reviewed for this article does not establish a reliable founding year, headquarters or standalone revenue and profit figures, for the current entity. Those details have therefore not been guessed.
Top 10 Asset Management Companies in UK: Comparison
| Rank | Company | Founded | UK-domiciled fund assets (2026) | Latest Revenue | Main Products/Services |
| 1 | M&G Securities | 1931* | £31.99bn | Not publicly disclosed | Equity funds, bond funds, multi-asset investments |
| 2 | Jupiter Unit Trust Managers | 1985* | £29.03bn | Not publicly disclosed | Active equity funds, bond funds, multi-asset funds |
| 3 | Quilter Investors | 2018* | £27.96bn | Not publicly disclosed | Multi-asset funds, investment portfolios, risk-managed solutions |
| 4 | Invesco | 1935* | £27.42bn | Parent-company revenue; verify FY2025 figure | ETFs, equity funds, fixed-income funds, multi-asset solutions |
| 5 | BNY Mellon Fund Managers | 1784* | £26.99bn | Not publicly disclosed | Equity funds, fixed-income funds, investment strategies |
| 6 | Baillie Gifford | 1908 | £24.51bn | Not publicly disclosed | Global equity funds, investment trusts, long-term investment strategies |
| 7 | Apex Fundrock | Apex Group: 2003 | £23.72bn | Not separately disclosed for Apex Fundrock | Fund management, fund administration, fund services |
| 8 | J.P. Morgan Asset Management | 1871* | £19.08bn | Asset-management-specific figure not verified | Equity funds, bond funds, ETFs, institutional investments |
| 9 | THESIS Unit Trust Management | Not verified | £17.76bn** | Not publicly disclosed | Unit trusts, investment fund management |
| 10 | Janus Henderson Investors | 2017 | £16.95bn | US$3.10bn group revenue (FY2025) | Equity funds, fixed-income funds, multi-asset and specialist strategies |
What Should You Check Before Choosing an Asset Management Company?
First think about what you want the investment to achieve. If you are saving for retirement aiming for a long‑term goal or looking for income you will need different kinds of funds. Check if the fund holds shares, bonds or a mix of assets and see how much its value can change.
Fees are important too. Compare the management fee and other costs because they cut into the money that stays invested. Look at the fund’s goal, risk details and how it performed in the past. The experience of the people who run it. Keep in mind that past performance does not promise results.
Finally check if the fund fits your situation and if you can buy it through the platform or adviser you use. A big AUM may show that the company is large. It does not ensure good returns or that every fund is right for every investor.
Conclusion
The UK asset management market has investment groups, specialist portfolio managers and companies that help run investment funds. This new list looks at firms and platforms that were not in the earlier articles and it uses UK‑domiciled fund assets as the main way to rank them.
The numbers let readers see how big each firm is in that market. They do not show which company will give the best investment outcome. Before you decide, compare the funds, their fees, strategies and risks. The fund that meets a person’s needs is more important than the company’s rank.
FAQs
1. What are the top asset management companies in the UK?
The answer depends on the measure used. This article ranks the companies using the Investment Association’s May 2026 data on UK-domiciled fund assets. It does not include every asset management firm operating in Britain, so it should not be considered a ranking of all UK asset managers.
2. What does assets under management mean?
Assets under management (AUM) is the value of investments that a company manages on behalf of its clients. This amount can rise or fall as markets change or investors add or withdraw money. AUM is not the same as a company’s revenue, profit, or assets serviced.
3. Why are some global companies included in a UK list?
Some international firms manage funds that are domiciled in the UK. A fund’s domicile refers to the country where it is legally established, not necessarily where its manager is based. Since this ranking focuses on UK-domiciled funds, global companies that manage these funds can also be included.
4. Does a higher AUM mean a company is better?
Not necessarily. A higher AUM indicates that a company manages more assets under the chosen measurement method, but it does not guarantee better returns, lower fees, or lower risk. Investors should consider a fund’s objectives, fees, investment strategy, and suitability before making a decision.
5. What is the difference between active and passive fund management?
Active management involves selecting investments based on research and a manager’s strategy to achieve specific objectives. Passive management generally aims to track the performance of a market index. Both approaches involve costs and risks, and neither guarantees a profit.
6. Why are some revenue figures marked as not publicly disclosed?
Some companies report financial results for their parent groups without providing separate revenue figures for their UK fund management businesses. When a reliable, comparable standalone figure is unavailable, the article marks the revenue as not publicly disclosed rather than assuming that the parent company’s entire revenue comes from its UK operations.
7. Are assets under management the same as assets serviced?
No. Assets under management generally refer to investments over which a firm has management responsibility. Assets serviced may include investments supported through administration, custody, or other services without the firm making investment decisions. These figures measure different activities and should not be mixed when comparing companies.
8. Can investors choose a fund based on the company’s ranking?
A company ranking can be a useful starting point, but it should not be treated as a recommendation to invest in a particular fund. Investors should review fund documents, fees, risks, investment objectives, and personal financial needs. Seeking advice from a regulated financial adviser may also be helpful. Investments can fall in value, and investors may lose money.
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