Siân Perez

Siân Perez is Counsel in the Firm’s Restructuring Practice. Based in the London office, Siân’s practice focuses on advising on domestic and cross-border restructurings and insolvency situations. She represents a wide spectrum of stakeholders, including creditors, debtors, sponsors and insolvency practitioners on a variety of restructuring matters.  

Notable experience prior to joining Simpson Thacher includes representing:

• The debtor in connection with the financial restructuring of the 299MW Tees Renewable Energy Plant, the world’s largest pellet biomass power plan, implemented by way of a Part 26A restructuring plan;
• Virgin Atlantic Airways on the £1.2bn solvent recapitalisation of the Virgin Atlantic Group involving the first UK Part 26A restructuring plan;
• A group of distressed debt funds on the acquisition, by way of a debt for equity swap, of certain real estate investment interests from a company in administration;
• The coordinating creditors on the financial restructuring of Premier Oil plc, implemented by way of a scheme of arrangement in the Scottish Courts;
• Trafigura as shareholder and lender on the €2.6bn restructuring of the Nyrstar group implemented by way of a scheme of arrangement;
• The minority investor in connection with the restructuring and exit of their investment in a UK hotel development project;
• The security agent and secured lender in connection with the enforcement of security and appointment of receivers to the shares in a real estate investment group;
• Certain creditors in connection with the insolvencies of the Thomas Cook group;
• The administrators of the TES Aviation group of companies in connection with the pre-pack sale of part of the business and ongoing administrations of the remaining companies; and
• The coordinating committee of creditors in connection with the $4.5bn debt restructuring of a UAE-based construction group.

Siân has been recognized by Global Restructuring Review among its “Women in Restructuring” for 2023 and was named “Rising Star – International Firm” at the IFLR Europe Awards 2021. She received her LL.B. in Law with French Law and Language from University of Leicester in 2008. Siân is admitted to practice in England and Wales.