UK Companies Command Lower Premiums as Buyers Exercise Caution Towards London Market in 2025

Britain’s listed companies faced a sobering reality in 2025, with takeover bids reflecting increased buyer caution towards the London equity markets despite broader index gains. The trend signals a fundamental shift in how acquirers perceive value in the UK’s public markets.

Ten takeover transactions valued between £1 billion and £5 billion across London exchanges commanded an average premium of 30 per cent to pre-announcement share prices in 2025, according to Dealogic data. This represents a notable decline from the 38 per cent average recorded in 2024, suggesting a recalibration of buyer expectations.

Will Cain, Mergermarket’s head of analytics for Europe, the Middle East and Africa, attributed the compression to market dynamics. Bidders are encountering greater difficulty identifying attractively priced targets, he observed, as UK stock markets trade near record highs and acquirers maintain pricing discipline.

The FTSE 250 index, widely regarded as a barometer of British economic health, posted an 8.9 per cent gain in 2025 to close at 22,470. This surpassed the 6 per cent advance recorded in 2024, though the index remains below its 2021 peak of 24,251. The improved performance has seemingly complicated valuations for potential acquirers.

Major transactions dominating the 2025 landscape included KKR’s £4.8 billion acquisition of Spectris, the precision instruments manufacturer, and DoorDash’s £2.8 billion purchase of Deliveroo. These deals exemplified the ongoing private equity appetite for British assets, albeit at more measured valuations.

A divergent pattern emerged in the small-cap segment, where companies attracted substantially higher premiums. Bids valued between £100 million and £500 million carried an average 31 per cent premium in 2025, compared with 22 per cent the previous year. This suggests bidders remain willing to pay substantial premiums for specific assets they deem strategically valuable.

Cain emphasised that acquirers continue demonstrating readiness to compensate generously for high-quality British assets. Spectris received a takeover premium of 105 per cent, whilst Alphawave, the high-speed connectivity technology group, commanded a 96 per cent premium. These transactions, however, represent outliers rather than market norms.

The volume of substantial transactions contracted during the period. The number of takeovers valued between £1 billion and £5 billion declined to 10 in 2025 from 13 the previous year. The aggregate value similarly decreased to £22.3 billion from £35.2 billion, reflecting reduced appetite at the upper end of the market.

Transatlantic comparisons highlight the challenges facing London. American megadeals, including Union Pacific’s £65.8 billion merger agreement with Norfolk Southern, propelled the combined value of transactions exceeding £5 billion to £553 billion, up from £316 billion in 2024. The disparity underscores the concentration of large-scale activity in United States markets.

Cain identified structural factors contributing to Britain’s relative underperformance. The UK maintains relatively few listed companies positioned within key merger and acquisition themes surrounding technology and artificial intelligence, sectors driving substantial American activity. Corporate acquirers may also be redirecting attention towards the US market, anticipating less stringent regulatory scrutiny from competition authorities.

The sustained wave of take-privates has intensified concerns regarding London’s competitive position as a global financial centre. The exchange has simultaneously endured a pronounced shortage of new listings, compounding fears about market depth and vitality. These parallel trends raise fundamental questions about the long-term attractiveness of British public markets for both issuers and investors.

Market participants now face a critical juncture. The combination of elevated index levels, compressed takeover premiums, and diminished large-cap activity suggests structural headwinds that extend beyond cyclical factors. Whether London can reverse these trends remains an open question as stakeholders evaluate the exchange’s future trajectory.