Webber Wentzel and Blake Cassels & Graydon topped the legal advisers charts for metals and mining sector mergers and acquisitions (M&A) in 2025 in terms of value and volume, respectively, based on a league table from data analytics company GlobalData.

According to GlobalData's Financial Deals Database, Webber Wentzel lead by value, advising on deals totalling $20bn.

Blake Cassels & Graydon secured its lead position by volume with guidance on 23 transactions.

In terms of deal value, Latham & Watkins secured second place at $19.7bn, followed by Wachtell, Lipton, Rosen & Katz with $19.1bn.

Torys and Blake Cassels & Graydon follow with $17.8bn and $15.2bn, respectively.

In terms of deal volume, Cassels Brock & Blackwell ranked second alongside Fasken Martineau DuMoulin, with 23 deals each.

DLA Piper and McCarthy Tetrault followed with 12 and 11 deals, respectively.

GlobalData lead analyst Aurojyoti Bose said: “Blake Cassels & Graydon registered an improvement in the total number of deals advised by it in 2025 compared to the previous year. Its ranking by volume improved from fourth to the top position. It also held the fifth position by value in 2025.

“Meanwhile, Webber Wentzel advised on much lesser number of deals but managed to lead by value, driven by big-ticket deals. During 2025, it advised on two billion-dollar deals that also included a megadeal valued at more than $10bn.”

GlobalData’s league tables are based on the real-time tracking of thousands of company websites, advisory firm websites and other reliable sources available in the secondary domain. A dedicated team of analysts monitors all these sources to gather in-depth details for each deal, including adviser names.

To ensure further robustness of the data, the company also seeks submissions of deals from leading advisers.