Herbert Smith Freehills (HSF) is a global law firm[5] with headquarters in London, England and Sydney, Australia.

Herbert Smith Freehills is a member of the Earthshot Prize Global Alliance along with Arup, Bloomberg L.P., Deloitte, Hitachi, the INGKA Group, Microsoft, MultiChoice, Natura & Co, Safaricom, Salesforce, Unilever, Vodacom, Walmart, and British Airways.

Mann, played a pivotal role in transforming the legal profession in England, where litigation was traditionally managed by clerks and barristers.

[20] At the time of its merger with Freehills, Herbert Smith had around 240 partners, 1,300 lawyers, with offices in Europe, the Middle East and Asia.

[31] In November 2024, Herbert Smith Freehills announced that it would merge with U.S.-based Kramer Levin to form one of the top-20 global law firms by headcount.

[29] The Tokyo office relies upon a referral arrangement with Japan's Big four law firms to avoid competing with them for local legal work, and due to difficulties with hiring Japanese attorneys.

[35] Following the firebombing of the Adass Israel Synagogue in Melbourne, Damien Hazard, an Australia corporate lawyer who has been a partner with HSF for 12 years tweeted "Never too soon for Jeremy Leibler to just invent a link with anti-genocide protests".

Some examples include: Herbert Smith Freehills helped Sergey Podoprigorov, a judge in the Russian Federation who sentenced Vladimir Kara-Murza, a prominent journalist, author, filmmaker, human rights activist and political prisoner that received an extremely harsh prison sentence in Russia in 2023 after publicly criticizing the Russian invasion of Ukraine.

[39] Herbert Smith Freehills advised Sir Alan Sugar in relation to his dispute with Terry Venables over the English Premier League football club Tottenham Hotspur.

Herbert Smith Freehills advised UK chocolatier Hotel Chocolat on its £534m takeover by US food giant Mars Inc. in 2023.

[40] Herbert Smith Freehills successfully secured a landmark victory for the Financial Conduct Authority (FCA) in a High Court case that clarifies whether businesses were entitled to compensation for Covid-19-related disruptions under their insurance policies.

[41] Goldman Sachs in a US$1.2 billion claim brought by the Libyan Investment Authority in relation to a series of leveraged derivatives transactions, featuring allegations of undue influence and unconscionable bargain.

[45] Iveco and Fiat Chrysler as coordinating and UK competition litigation counsel in relation to follow-on damages claims stemming from the European Commission's settlement decision in Trucks.