Key facts
- Global M&A activity reached a record $2.8 trillion in H1 2026.
- Mega-deals exceeding $10 billion drove the record M&A value.
- The number of global M&A deals decreased.
- Technology led in M&A deal value globally.
- UK M&A activity surpassed $231 billion in 2026.
- UK M&A activity increased by 210% in 2026 compared to the previous year.
- Foreign bids are driving the surge in UK M&A.
- U.S. bidders are particularly active in the UK.
- Cheaper UK shares and a predictable takeover market contribute to the UK M&A surge.
Global mergers and acquisitions (M&A) activity has achieved a record-breaking $2.8 trillion in the first half of 2026. This surge is primarily attributed to a significant increase in mega-deals, each valued at over $10 billion. While the total number of announced transactions saw a decrease, the overall value of these deals rose substantially, with the technology sector emerging as the leader in M&A value.
In the United Kingdom, M&A activity has been propelled to over $231 billion so far in 2026, marking a substantial 210% increase compared to the previous year. This dramatic rise is largely fueled by foreign bids for UK companies. U.S. bidders have been particularly active in the UK market. Factors contributing to this trend include the relative affordability of UK shares and a predictable takeover market environment.