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Business details

Business type
UK business registered in Companies House
Core industry
Legal services


UK registered company – number 08879988

Registered office address:

200 Strand, London, WC2R 1DJ


Company description

Armstrong Teasdale (AT) is an Am Law 200 law firm with offices across the U.S. and in the U.K. The firm employs over 640 people, of whom more than 340 are lawyers. We represent 25% of the Fortune 500 and serve clients around the globe. During its 120-year history, AT has built a reputation based on the breadth of our lawyers’ skills and knowledge, team approach to representation, responsiveness to clients’ needs and understanding of their businesses. Our mission statement, which reflects these attributes, is: Always exceed expectations through teamwork and excellent client service.
In addition, our firm and lawyers have earned accolades across practice areas, as well as for our diversity, equity and inclusion efforts, including recognitions from The Legal 500 U.K., Chambers USA and the Human Rights Campaign’s Corporate Equality Index.
Armstrong Teasdale is a member of Lex Mundi, the world’s leading network of independent law firms with in-depth experience in 125+ countries worldwide, and the Alliuris Group, a global network of law firms with offices in 36 countries around the world. Working with both Lex Mundi and Alliuris firms, we can seamlessly handle our clients’ most challenging cross-border transactions and disputes.

Products and services

Company incorporation, Data protection and information assurance, Employment, Immigration, Intellectual property, Land use planning, Alternative Dispute Resolution, Complex Commercial Litigation, Construction Services, Copyright, Corporate, E-Discovery, Emerging companies, Environmental, Franchising and Distribution, Governance and Complicance, Intellectual Property Litigation, International, Litigation, Mergers and Acquisitions, Noncompete and Trade Secrets, Patent, Privacy and Data Security, Private Equity and Venture Capital, Product Liability, Real Estate, Restructuring, Insolvency and Bankruptcy, Sports, Media and Entertainment, Technology Transactions, Trademark, Trusts and Estates