Lisa O'Neill


F +44 20.7615.3100


10 Gresham Street

London, UK EC2V 7JD

T +44 20.7615.3300

F +44 20.7615.3100

Lisa O’Neill is a partner in the London office of Milbank LLP and a member of the firm’s Global Corporate Group.

Lisa has recently been named Individual (London) of the year: Corporate and Commercial by Legal 500 UK 2020.

Most notably, Lisa represented Praxair, Inc. in the €5 billion (US$5.85 billion) divestment of the majority of Praxair’s businesses in Europe to Taiyo Nippon Sanso Corporation, a company listed on the Tokyo Stock Exchange and majority owned by Mitsubishi Chemical Holdings Corporation. She also advised on the US$3.3 billion divestment of North American and South American assets by Praxair, Inc. and Linde AG to Messer and CVC Capital Partners Fund VII. The divestments were required for the consummation of the US$90 billion Praxair-Linde merger.

Primary Focus & Experience

Lisa advises on a wide range of corporate and M&A transactions, including large public and private mergers and acquisitions, divestitures, takeovers, joint ventures, re-organisations and commercial contracts. Lisa’s clients include FTSE 100, Fortune 250, international energy companies, infrastructure funds, financial institutions and private equity funds.

In addition to the Praxair deals noted above, Lisa's experience includes advising:

  • Advised Centricus on establishing a multi-billion alternative investment platform and on its fee arrangement with SoftBank in connection with the establishment of the US$100 billion Vision Fund.
  • Advised Actuant, a NYSE listed diversified industrial company, on the multi-jurisdiction sale of the Viking Sea Tech business to Acteon and acquisition of the Mirage Business from Acteon (a portfolio company of Kohlberg Kravis & Roberts & Co. L.P.).
  • Advised the Al-Thani family on the acquisition of Claridges, the Connaught and the Berkeley hotels.
  • Advised Shell on the sale of its liquefied petroleum gas businesses in eight European countries.
  • Advised Vale SA on the USD$4.9 billion sale of bauxite, alumina and aluminum mining and smelting assets to Norsk Hydro ASA.
  • Advised RWE Dea as the target in the sale by its parent company, RWE AG, for €5.1 billion, and, separately, in a joint venture with BP on a US$10 billion development agreement with the Egyptian government.

Recognition & Accomplishments

In recent years, Lisa has received multiple awards and accolades for her work on Corporate transactions, including:

  • Corporate and Commercial: Individual (London) of the year by Legal 50 UK 2020
  • Most Valuable Player (MVP) of the Year 2019 in Mergers and Acquisitions by Law360
  • Best in Mergers and Acquisitions by the 2019 Women in Business Law
  • “M&A Deal of the Year 2019” International M&A Award Winner by The M&A Advisor

Lisa has also received:

  • M&A Team of the Year (Large Deal) by Legal Week British Legal Awards 2018 (shortlisted)
  • Lexology Client Choice Award for Excellence in Service 2017
  • Rising Star in Legal Services: 40 under 40 2016
  • Rising Star in The Lawyer Hot 100 2016

Lisa has been recommended among a variety of journals including in Corporate, Oil and Gas and in Commercial: M&A – mid-market by The Legal 500 UK 2018/2019 as well as a ranking in IFLR1000 2019 as a Notable Practitioner for Financial & Corporate.

Additional Details
  • University of East Anglia and University of British Columbia, LL.B., Honours
  • England and Wales