Sian Williams


[email protected]


P: +44.20.7726.3465
F: +44.20.7726.3565
Sian Williams

When clients are evaluating transformative and complex transactions, often with a cross-border dimension, they rely on Sian Williams. With over 15 years of experience, Sian is well-versed in advising corporates, private equity sponsors, financial institutions, investee companies and founders on a range of strategic transactions across the business life-cycle, including mergers and acquisitions, public takeovers and joint ventures. Additionally, clients trust Sian and value her technical experience when it comes to capital raising activities, such as initial public offerings and follow-on equity offerings.

Sian works with clients across various industries, with a particular focus in the energy, technology, real estate and life sciences sectors.

Sian has been recognised for her high-quality legal work and valuable strategic advice by reputable publications such as The Legal 500 UK and Legal Business Awards.

Related Experience

Mergers and Acquisitions

  • Seadrill Limited on its US$628 million sale of seven jack-up drilling rigs in Saudi Arabia to ADES Arabia Holding
  • Noble Corporation on its US$375 million divestment of five jack-up drilling rigs to Shelf Drilling and its business combination with Maersk Drilling
  • Noble Corporation on its US$292 million divestment of four jack-up drilling rigs in Saudi Arabia to the ADES group
  • Eshraq Investments on its acquisition of Goldilocks Investment Company, to create a diversified entity with combined assets of more than AED 3.8 billion
  • BP p.l.c. and its affiliates on its acquisition of BP Midstream Partners LP in an all-stock transaction
  • Qannas Investment Limited on its sale of assets to the Tabarak group
  • Connect Fibre on the majority investment by Foresight Group
  • SHUAA Capital on various acquisitions and joint ventures
  • Ithmar Capital Partners in connection with the reorganization of debt facilities extended by Ajman Bank to Thumbay Group
  • Leading U.S. healthcare REIT on numerous acquisitions and disposals
  • Leading private equity sponsor on its recommended takeover of a company listed on the Johannesburg Stock Exchange and the Stock Exchange of Mauritius
  • LSG Sky Chefs on the disposal of its 50% stake in joint-venture Alpha LSG, the biggest inflight catering, on-board retail and logistics company in the UK, to Dnata
  • Marriott International on its £100 million recommended public takeover of Elegant Hotel Group
  • The Stars Group on its US$4.7 billion acquisition of Sky Betting and Gaming from CVC, Sky and management and related arrangements
  • Leading private equity sponsor on numerous acquisitions and disposals of portfolios of hotels and related franchising arrangements
  • Kindred Group on its £200 million recommended public takeover of 32Red plc, an online casino, poker and bingo operator
  • United Parcel Service on its acquisition of Marken, a global provider of supply chain solutions to the life sciences industry
  • Diploma PLC on numerous acquisitions
  • GE Healthcare on numerous acquisitions and disposals
  • Avnet on its £868 million recommended public takeover of Premier Farnell
  • IHS Markit (part of S&P Global) on numerous acquisitions and disposals
  • Fusion IP plc on the recommended takeover by IP Group plc

Equity Capital Markets

  • Amryt Pharma plc on its reverse takeover of Aegerion Pharmaceuticals out of chapter 11 bankruptcy proceedings and related scheme of arrangement and relisting of the enlarged group on AIM
  • Forterra plc on its £400 million initial public offering
  • Leading private equity sponsor on its proposed disposal of a U.S. building and construction products manufacturer, and related reverse takeover and admission to the premium listing segment of the Official List and to trading on the London Stock Exchange
  • Investec Bank in connection with its role as sponsor to Lamprell plc on its class 1 transaction, comprising its joint venture with Saudi Aramco, the National Shipping Company of Saudi Arabia and Hyundai Heavy Industries Co. Ltd. in relation to the establishment, development and operation of a maritime yard in Saudi Arabia
  • Kennedy Wilson Europe Real Estate plc on its £910 million initial public offering, its £350 million firm placing and placing and open offer and its €472 million related party transaction of two Irish property portfolios
  • Lamprell plc on its US$120 million 5 for 16 rights issue and its US$336 million takeover offer for Maritime Industrial Services Co. Inc. Ltd., and its US$225 million 3 for 10 rights issue
  • Merlin Entertainments plc on its £3.2 billion initial public offering
  • Barclays Bank, Deutsche Bank and RBC Capital Markets, among others, on the £780 million initial public offering of Infinis Energy plc

Awards & Community

Recognised in The Legal 500 UK, as a "Next Generation Partner" for Corporate & Commercial, 2022, 2023 & 2024

Awarded 'Highly Commended' in "Corporate Team of the Year" by Legal Business Awards, 2020

Awarded "Corporate Team of the Year" by Legal Business Awards, 2019


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Baker Botts Energy Lawyer School

Baker Botts is delighted to invite you to our Energy Lawyer School commencing on the 16 March and finishing on 24 March 2021