The 2020 edition of The Legal 500 United Kingdom brecognized 24 Arnold & Porter attorneys and 15 practices areas. The guide distinguished eight attorneys as elite "Leading Individuals," one attorney a "Next Generation Partner," and one attorney as a "Rising Star" in their guide to up-and-coming attorneys. The Legal 500 researches the global legal market using feedback from 250,000 in-house counsels and lawyers worldwide.

The following practices were recommended:

  • Corporate & Commercial: EU & Competition
  • Corporate & Commercial: M&A Mid-Market
  • Corporate & Commercial: Venture Capital
  • Crime, Fraud and Licensing: Fraud: White-Collar Crime
  • Dispute Resolution: Commercial Litigation
  • Dispute Resolution: International Arbitration
  • Dispute Resolution: Public International Law
  • Finance: Debt Capital Markets
  • Human Resources: Employment: Employers
  • Insurance: Product Liability: Defendant
  • Investment Fund Formation and Management: Hedge Funds
  • Risk Advisory: Data Protection, Privacy, & Cybersecurity
  • Risk Advisory: Regulatory Investigations & Corporate Crime
  • TMT: IT & Telecoms
  • TMT: Pharmaceuticals and Biotech