Investment bankers, lawyers, accountants, and other advisers have generated more than £1.2bn in fees from takeovers of UK-listed companies during 2026, as the value of transactions involving London-quoted businesses has risen sharply.
An analysis of published company filings reported by the Guardian put disclosed advisory fees above £1.2bn. London Stock Exchange data cited in the same analysis showed the value of mergers and acquisitions involving UK-listed companies reaching about £100bn, an increase of roughly 175% from the previous year.
The figures illustrate the scale of professional-services revenue created by the current deal cycle, even as completed acquisitions reduce the number of companies remaining on the UK public markets.
Advisory fees are distributed across investment banks, corporate lawyers, accountants, public relations advisers, consultants, and other specialists involved in negotiating, financing, documenting, communicating, and completing transactions.
The disclosed total is unlikely to capture the full cost of dealmaking. Fees associated with unsuccessful approaches, rejected bids, and transactions that have not yet published complete documentation can sit outside the available figures.
JP Morgan has been the busiest investment bank on UK-company deals by volume during the period, advising on 14 transactions with a combined value of $89.4bn, according to London Stock Exchange data cited in the analysis. Slaughter and May was identified as the leading legal adviser.
A sequence of private equity bids and acquisitions by international corporate buyers has supported that activity. UK-listed companies remain attractive where buyers believe their market valuations do not fully reflect their assets, intellectual property, market positions, or longer-term earnings potential.
The resulting fee pool highlights an unusual feature of the City’s current position. Takeovers create immediate income for advisers, lenders, and professional-services businesses, while successful acquisitions can remove clients from the stock market and reduce the future pool of listed-company work.
That future work extends beyond takeover mandates. Public companies support ongoing demand for equity research, broking, investor relations, capital raising, governance advice, audit, legal services, and other specialist functions.
The effect is more pronounced while the market for new listings remains subdued. EY figures cited in the analysis showed seven UK listings during the first half of 2026, raising a combined £577m. The imbalance between companies being acquired and businesses entering the public market has continued to focus attention on the depth of London’s listed-company base.
A strong M&A market and a strong equity market are not necessarily the same thing. Advisers can earn substantial fees from a company leaving an exchange, while investors and market operators are concerned with the overall supply of quoted businesses, liquidity, research coverage, and the availability of assets across sectors.
Private equity remains an important source of demand. Funds continue to hold large amounts of committed capital and can pursue businesses where they believe restructuring, operational changes, investment, or a longer ownership horizon can produce stronger returns away from public-market scrutiny.
Corporate acquirers have different incentives. Cross-border transactions can provide market access, technology, intellectual property, customers, manufacturing capacity, or supply-chain control. Differences between UK and overseas equity valuations can also influence whether an acquisition appears financially attractive.
Boards receiving bids must weigh those factors against their companies’ independent prospects. Directors are required to consider whether an offer provides sufficient value, while shareholders decide whether the premium available through a sale is preferable to remaining invested in the business.
The growth in takeover activity has coincided with reforms intended to make London more attractive to issuers and investors. Changes to listing rules, efforts to mobilise more domestic institutional capital, and programmes encouraging pension investment in UK growth assets are all intended to strengthen the market over a longer period.
Those reforms operate on a different timetable from individual transactions. A company can be acquired and delisted within months, while rebuilding an IPO pipeline depends on valuations, investor demand, economic conditions, management confidence, and the willingness of founders and private equity owners to choose London over other exchanges or continued private ownership.
The £1.2bn advisory-fee estimate consequently measures more than the health of the City’s dealmaking industry. It shows how much commercial activity is being created by ownership change at the same time as the public market attempts to replenish its stock of listed businesses.
With further large transactions still progressing and some advisory costs yet to be disclosed, the eventual 2026 fee total may rise again. Whether the year is remembered as a period of renewed corporate activity or another step in the contraction of London’s quoted-company base will depend partly on how quickly new listings begin to balance the businesses being acquired.
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