On 16 July the Swiss-Swedish engineering group ABB agreed to buy Rotork, the Bath-based valve actuator manufacturer, for 506 pence a share. That values the company at roughly £4.136 billion. It is also 73.0 per cent more than Rotork shares closed at the day before.
A premium of that size is not a negotiating flourish. It is a statement that the buyer and the stock market had arrived at very different views of what the same business was worth, and that the buyer was confident enough in its own number to pay nearly three-quarters again on top of the market’s.
What Was Bought, and for How Much
The offer document sets out the terms precisely. Rotork shareholders receive 506 pence for each share, made up of 503 pence in cash and a permitted dividend of up to 3 pence they keep if the board declares it. The cash consideration alone represents a 73.0 per cent premium to the closing price of 290.8 pence on 15 July, and 62.7 per cent to the volume weighted average price over the preceding period.
Rotork is not a distressed asset. The offer document records an adjusted operating profit margin of 24.6 per cent for the financial year ended 31 December 2025, alongside revenue growth across 2022 to 2025. ABB describes the fit as strengthening its position at the field-device layer and completing what it calls the sense, control and act automation loop. Rotork is expected to run as a separate division.
What made the week unusual was that Rotork was not alone. On the same day, Gooch & Housego, a photonics specialist, accepted £346 million from the American private equity firm Arlington Capital, and Ramsdens, a pawnbroker, agreed a £200 million takeover by the Nasdaq-listed FirstCash. The following week the outsourced services group Mitie agreed a £3.1 billion deal with OCS Group, a private equity owned rival.
The Premium Is the Signal
Steven Fine, chief executive of the investment bank Peel Hunt, noted that Rotork, Gooch & Housego and Ramsdens had accepted offers pitched at premiums of 73 per cent, 41 per cent and 49 per cent respectively. His reading, quoted by CNBC, was blunt: “That tells you just how undervalued many U.K. companies have become.”
There is a technical point worth separating from the rhetoric. Takeover premiums are always positive, because a buyer has to offer enough to persuade holders to sell, and control itself carries value. A 20 to 30 per cent premium is unremarkable. Premiums clustering between 41 and 73 per cent are a different matter, and when three land on one day the pattern stops looking like company-specific negotiation and starts looking like a repricing of a whole market.
The businesses involved point the same way. Two of the three are specialist engineering and photonics companies that lead their fields globally. These are not turnaround situations being bought cheaply for their assets. They are profitable niche manufacturers whose listed valuations had drifted far enough below what a trade or private equity buyer would pay that the gap became an opportunity.
The Scale of It Since 2023
Charles Hall, head of research at Peel Hunt, put numbers to the trend before this latest cluster. Since the beginning of 2023 there have been 154 bids, completed or in progress, for UK companies with a market capitalisation above £100 million, together worth £165 billion.
This year alone three FTSE 100 constituents have agreed takeovers: the Lloyd’s of London insurer Beazley, the asset manager Schroders and the quality assurance specialist Intertek. Two more, the energy services group DCC and the industrial warehouse operator Segro, are the subject of live bids. Tate & Lyle and easyJet, both former index constituents, have agreed to or received approaches.
Official statistics show the same direction from a different angle. Office for National Statistics figures for the first quarter of 2026 put inward M&A, meaning foreign companies acquiring UK ones, at £14.2 billion. UK companies acquiring foreign ones accounted for £4.7 billion, and domestic deals for £1.5 billion. Britain bought about a third as much abroad as was bought of it at home.
The Listings Leaving as Well
Takeovers are only one of the two exits. Hall’s note, titled “Selling the family silver”, records that since the start of 2023 seven large UK companies, among them the building materials group CRH and the fintech Wise, have moved their listing elsewhere, taking around £120 billion of market capitalisation with them. A further eight UK-based companies, most prominently the chip designer Arm Holdings, chose to list overseas in the first place, which Hall costs at another £330 billion of market value the UK never captured.
Put beside the £165 billion of bids, the direction of travel is consistent. Companies are leaving the UK public market by being bought, by relisting, or by never listing here at all.
Why Buyers Are Finding It Easy
Hall offers several explanations, and none of them is a conspiracy. Boards, executives and shareholder registers are increasingly international, so the domicile of a listing matters less to the people deciding. UK markets are unusually open, with few of the national-interest frictions that slow deals elsewhere. Buyers have confidence that a UK bid will actually complete, which itself attracts more bidders.
The last explanation is the uncomfortable one. Domestic capital has been flowing out of UK funds, and portfolio managers have become readier to accept offers, either to improve reported performance or simply to meet redemptions. A seller who needs liquidity is a seller who accepts a good price rather than holding for a better one. Hall’s observation is that UK asset managers carry less of a home bias than their peers in comparable economies.
What It Means If You Own a Business
For private company owners the read-across is direct, and more encouraging than the national narrative suggests.
Trade and private equity buyers are actively pricing UK assets above where the public market has them. If listed peers in a sector are being taken out at 40 to 70 per cent premiums, that is evidence for a private valuation conversation, not just a stock market curiosity. Comparable transaction multiples, rather than listed multiples, are the relevant benchmark, and the gap between the two is currently wide.
The profile of what is selling is also informative. Specialist manufacturers with defensible niches, high margins and international customers are the ones attracting premium bids. Rotork’s 24.6 per cent operating margin is the kind of number that draws a strategic buyer regardless of where the business is listed. Owners of businesses with those characteristics are in a stronger negotiating position than the general mood about the UK economy would imply.
There is a cost side too. A company acquired by an overseas buyer often sees decision-making, procurement and eventually senior roles migrate. For suppliers, a customer being taken over is a contract that will be reviewed. For employees, an acquisition by a private equity owned rival, as at Mitie, usually means an integration programme.
What to Watch
Two things will show whether July was a cluster or a turn. The first is whether the live bids for DCC and Segro complete, and at what premiums, since Segro in particular would test appetite for large UK property assets. The second is whether any UK institution outbids a foreign buyer for a UK asset, which has been conspicuously rare.
The pattern so far is one-directional. Buyers who look closely at UK listed companies keep concluding they are worth substantially more than the price on the screen, and they keep being proved right by shareholders who accept.
This article reports on announced corporate transactions and does not constitute investment advice.
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