Market Standards Trend Report
Trends in UK Public M&A deals in H1 2025

Deal value and deal volume

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Deal volume

Takeover activity surged in H1 2025, with 36 firm offers announced making it the highest first-half total in six years. This marks a sharp 24% jump from H1 2024’s 29 offers and a significant 38% spike compared to H2 2024’s 26 offers, signalling a strong resurgence in deal making momentum.

Deal value

Aggregate deal value for all firm offers announced in H1 2025 was £21.6bn (H1 2024: £31.6bn; H2 2024: £23.3bn). While this represents a 32% decline from the exceptionally strong H1 2024, it remains broadly in line with H2 2024, reflecting a moderation in high-value deal activity.

Average deal values

The average deal value for firm offers announced in H1 2025 was £599m, reflecting a 45% decline from H1 2024 (£1.1bn) and a 33% drop compared to H2 2024 (896m). While deal volumes surged during the period, the fall in average deal value suggests a shift toward mid-market transactions, with fewer high-value bids driving overall totals.

Despite the drop from last year’s peak, the H1 2025 total still outpaces the full-year 2023 figures, suggesting that large-scale transactions continue to play a meaningful role in the current M&A landscape. Seven transactions (Advent International’s £3.8bn offer for Spectris plc, DoorDash’s £2.9bn offer for Deliveroo plc, Primary Health Properties’ £1.8bn offer for Assura plc, Qualcomm’s £1.8bn offer for Alphawave IP Group plc, KKR and Stonepeak Partners’ £1.7bn offer for Assura plc, Greencore Group’s £1.2bn offer for Bakkavor Group plc, and American Axle & Manufacturing Holdings’ £1.2bn offer for Dowlais Group plc) had deal values exceeding £1bn, and the largest transaction was Advent International, L.P.’s £3.8bn offer for Spectris plc, a supplier of high-tech instruments, test equipment and software for precision measurement. By comparison, H1 2024 saw ten transactions with deal values exceeding £1bn, with the largest transaction being International Paper Company’s £5.8bn offer for multinational packaging company DS Smith.

The uptick in activity during H1 is reflective of the greater discount to the true value of UK stocks that continues to make UK plc an attractive acquisition proposition. However, it is interesting to note that last year’s trend towards fewer larger value deals seems to have been reversed, with more lower value deals in the first half of the year. Perhaps execution risk (particularly in the form of geo-political risk) is putting a brake on mega-deals. As a significant proportion of bidders come from North America, we do not see any let up in this while the access to capital in the US markets continues to be relatively strong. But as we have seen before, if the US catches a cold, the rest of the Western world will inevitably follow.
Simon Allport, Partner, Bird & Bird LLP
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Photo by Joshua Hoehne on Unsplash

Photo by Joshua Hoehne on Unsplash

“We anticipate that significant amounts of public M&A activity will continue into H2. While there will be some deals in excess of £1 billion we expect most activity to be below £1 billion. We expect these activity levels to reflect the significant opportunities that continue to be available in the UK market with share prices remaining depressed. Continuing headwinds will inhibit some activity particularly at higher value levels or where there is a more challenging risk profile. Rising costs for UK businesses as budget changes come into effect and the volatile nature of markets due to Trump tariff policies, as well as other global political and economic trends, will affect the risk appetite of some potential acquirors and attractiveness of some targets. The ongoing challenge for target boards of the differential between market price and fundamental value will remain. There is significant optimism that changes of approach from the CMA both in relation to the availability of behavioural remedies and generally will open up opportunities that have previously been considered closed. This may well lead to an uptick in activity towards the end of H2 as the practical consequences of the CMA’s change of approach become clearer.”
Iain Fenn, Partner, Linklaters LLP
“The FTSE350 and AIM 50 indices index have shown a welcome increase in valuations since the nadir of early April; this has had an impact on price discussions, with shareholder requests for price bumps being ever more prevalent. Yet offeror valuation mechanism of targets hasn’t changed, and this is resulting in the average percentage deal  premia this year being in the mid thirties, rather than the 45-55% spread seen in the last few years.”
Simon Wood, Partner, Addleshaw Goddard LLP
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Photo by Iuliia Dutchak on Unsplash

Photo by Iuliia Dutchak on Unsplash