Sidley has been recognized with 12 practice area rankings and 34 lawyer rankings in the Chambers UK 2025 guide. This annual guide highlights the top lawyers, legal departments, and law firms in the United Kingdom, based on in-depth interviews with clients and in-house counsel. These accolades underscore the strength of Sidley's London office, which proudly marks its 50th anniversary this year.
Notably, Tom Thesing has been ranked as an Eminent Practitioner in Corporate/M&A: £100-800 million (London). This distinction acknowledges Tom's ability to balance his active practice with his leadership roles within the firm, including his position as managing partner of Sidley's London office and on Sidley's Management and Executive Committees.
Additionally, Sara George, Maria Isabel Manley, and Jayanthi Sadanandan have been ranked in Band 1 in their respective fields: Financial Services: Contentious Regulatory (Individuals) (UK-wide), Life Sciences: Regulatory (UK-wide), and Banking & Finance: Big-Ticket (London). These rankings affirm their status as leading lawyers in the market.
Sidley has achieved practice rankings in the following areas:
- Banking & Finance: Sponsors (London)
- Banking Litigation (UK-wide)
- Capital Markets: Debt (UK-wide)
- Competition Law (London)
- Corporate/M&A: £100-800 million (London)
- Data Protection & Information Law (UK-wide)
- Financial Services: Non-contentious Regulatory (UK-wide)
- Financial Services: Payments Law (UK-wide)
- Insurance: Non-contentious (UK-wide)
- Life Sciences: Regulatory (UK-wide)
- Restructuring/Insolvency (London)
- Tax (London)
