‘The volatility in the world isn’t going away anytime soon, it just has to be priced in. We have to focus on what deals can get done,’ says White & Case London M&A partner Sonica Tolani about her predictions for H2 following a mixed start to the year.
The latest data from LSEG shows that M&A activity increased by 33% year-on-year over the first half of 2025 to $1.98trn – the strongest opening period for dealmaking by value since 2022.
But with Trump’s 2 April Liberation Day tariff announcements triggering geopolitical chaos, this increase in value obscures the fact markets have been far from stable, with global deal volume down 10% over the six-month period – representing a five-year low by deal numbers.
‘It’s been an interesting H1, April saw significant volatility with many deals being paused. That said, there’s still plenty to play for in H2, and I’m relatively positive,’ comments Nigel Wellings (pictured right), co-head of European corporate at Clifford Chance. ‘Buyers are active and on the hunt for opportunities. We’re seeing them team up to pursue some of the larger, more complex deals.’
The rankings
The LSEG data shows Freshfields was the best performing UK-origin firm in the global value rankings, working on 104 deals worth $166.7bn to come in seventh place behind first placed Latham & Watkins (380 deals worth $277.5bn), Sullivan & Cromwell (92 deals worth $229.5bn), Wachtell (55 deals worth $204.9bn), Kirkland & Ellis (312 deals worth $203.4bn), Skadden (106 deals worth $173.3bn) and Davis Polk (79 deals worth $169.6bn). The tally makes Freshfields the only UK firm to feature in the top 10, with A&O Shearman the next best placed UK-origin firm in 11th place with roles on 140 deals worth almost $123bn.
Significantly, US firms didn’t just lead the tables in the global rankings. They also took the top six spots in LSEG’s UK involvement table by value, with Kirkland, Latham and White & Case taking the top three places, ahead of Freshfields, Norton Rose Fulbright, A&O Shearman and Slaughter and May in spots seven to ten in the table respectively.
Notably Freshfields, A&O Shearman and Clifford Chance all climbed up LSEG’s global principal adviser table, with all three making the top 10 in a table headed by Latham.
Mega deals
A quick glance at the LSEG numbers highlights some key trends, with the number of mega deals valued at more than $10bn in particular helping drive up the total global M&A value over the first half of the year.
Despite the total number of deals falling to around 24,000 globally, the number of mega deals close to doubled year-on-year, helping to inflate total global values up by a third.
In total, there were 32 mega deals worth a combined total of $606.9bn – making it the strongest H1 for $10bn+ deals since record-keeping began in 1980. These transactions were particularly prevalent in industries such as technology and in markets like the US, which accounted for three of the top five global announced megadeals. These saw Latham and Wachtell advise on Cox Communications’ $35bn acquisition, Davis Polk and Skadden advise on the spinoff and US listing of Holcim’s North American business Amrize for $33bn and Freshfields and Fenwick & West advise on Alphabet’s $32bn acquisition of Wiz.
Freshfields head of global transactions, Julian Pritchard (pictured right), explains: ‘There are always some deals for which the strategic logic is so compelling that they won’t be put off course by short term volatility, and that is more likely to be the case for the larger strategic deals that are transformational for the parties.’
Breaking it down
With more large single buyer deals announced in recent weeks– such as Merck’s $10bn acquisition of respiratory-focused pharmaceutical company Verona Pharma, which has generated roles for Freshfields and Latham, or Ferrero’s $3.1bn bid for cereal maker Kellogg, on which Davis Polk and Kirkland are advising, partners are generally feeling more confident about the rest of the year than H1.
‘There’s some incredible momentum, and while macroeconomic factors remain challenging, there is capital to be deployed and appetite for deals in sectors where investors see strategic value and growth potential,’ points out Sam Newhouse (pictured right), Latham & Watkins’ global vice chair of M&A.
This is particularly true in busier sectors such as tech, financial services and energy. According to LSEG data, tech M&A accounted for 18% of global deal value at $347.4bn, driven in large part by acquisitions of AI businesses and an increase in fintech activity. Financial services was the next busiest sector, with deal activity up 49% from H1 2024 to 17% of global deals value, followed closely by energy and power M&A.
White & Case’s London head of public M&A, Patrick Sarch, suggests that energy in particular is ripe for consolidation, predicting a ‘Supermajor mega merger’ between large publicly traded international oil and gas companies.
He adds: ‘the stars are aligning and conditions are becoming more conducive for consolidation amongst these massive competitors.’
Elsewhere, private equity-backed buyouts accounted for almost a quarter of global deal activity in H1, with the total value of private equity-backed deals climbing 24% year-on-year to $413.3bn; a figure that represents the third largest opening period ever for PE-backed M&A.
‘Activity levels are positive and our private capital clients are investing across a range of sectors and deal sizes, with momentum in take-private transactions and real assets, especially digital and broader infrastructure,’ says Kirkland corporate M&A partner Matthew Elliott.
Looking at deal activity by geography, while US target M&A still accounted for the greatest proportion of deals at 43%, the value of European target M&A fell 4% to $340.6bn.
In contrast, Asia Pacific deal making saw its strongest performance in three years, with combined deal value hitting $408.8bn – an increase of 82%.
‘The Asia IPO market has seen a dramatic shift in momentum,’ said Pritchard, ‘with dozens of companies now looking to IPO in Hong Kong, as one of the limited number of international listing venues available for China based companies.’
Looking ahead
According to partners, while challenges remain, the underlying fundamentals suggest a robust pipeline and an active market for the second half of 2025.
Tolani (pictured right) remains positive about the M&A market’s prospect for H2: ‘I’m an eternal optimist, and I’d like to think that the second half of the year is going to be strong.’
Ian Lopez, head of European M&A at Fried Frank, is similarly hopeful about the outlook for the second half of the year: ‘We are watching the markets closely as geopolitical conflicts, interest rates and tariffs on the US side play out. There’s a cautious climate right now, but if it turns around, we can expect private equity exits to pick up, which will hopefully result in a pickup in deal activity.’
Over at Freshfields, Pritchard also predicts markets will become more stable. He concludes: ‘M&A is often described as a conviction play, and the thunderstorms in the market following the geopolitical events and major shifts in global trade policy in Q2 certainly had an impact on conviction levels. Now there is a sense that global trade policy will move away from the extremes that had been previously feared, and M&A feels more navigable.’
LSEG Top Legal Advisers H1 2025: by global deal value
| Firm | Rank (last year) | Total deal value | Number of deals |
|---|---|---|---|
| Latham & Watkins | 1 (3) | $277.5bn | 380 |
| Sullivan & Cromwell | 2 (8) | $229.5bn | 92 |
| Wachtell | 3 (5) | $204.9bn | 55 |
| Kirkland & Ellis | 4 (4) | $203.4bn | 312 |
| Skadden | 5 (1) | $173.3bn | 106 |
| Davis Polk | 6 (7) | $169.6bn | 79 |
| Freshfields | 7 (6) | $166.7bn | 104 |
| White & Case | 8 (13) | $148.7bn | 143 |
| Paul Weiss | 9 (2) | $140.2bn | 103 |
| Cleary | 10 (10) | $123.3bn | 64 |
LSEG Top Legal Advisers H1 2025 – UK involvement by value
| Firm | Rank (last year) | Total deal value | Number of deals |
|---|---|---|---|
| Kirkland & Ellis | 1 (6) | $37.4bn | 34 |
| Latham & Watkins | 2 (2) | $37.2bn | 64 |
| White & Case | 3 (11) | $34.4bn | 34 |
| Fried Frank | 4 (12) | $31.7bn | 4 |
| Debevoise & Plimpton | 5 (87) | $31.6bn | 10 |
| Gibson Dunn | 6 (31) | $27.3bn | 9 |
| Freshfields | 7 (7) | $21.5bn | 30 |
| Norton Rose Fulbright | 8 (64) | $19.7bn | 31 |
| A&O Shearman | 9 (8) | $15.1bn | 42 |
| Slaughter and May | 10 (1) | $13.9bn | 13 |





