Global mergers and acquisitions (M&A) soared to unprecedented heights in 2025, marking the second-highest total in over four decades, according to data from the London Stock Exchange Group. The year saw deal-making exceed £3 trillion ($4 trillion) for the first time since the 2021 boom, driven by a surge in mega-deals and favourable market conditions.
Worldwide M&A activity climbed nearly 50 per cent from 2024, reaching £3.3 trillion ($4.5 trillion). This figure trails only the pandemic-fuelled frenzy of 2021.
