The 2025 edition of the IFLR1000 Western Europe guide recognized Arnold & Porter in 5 practice areas and highlighted 4 attorneys as leading lawyers. The IFLR1000 is a "guide to the world's leading financial and corporate law firms and lawyers."
The IFLR1000 ranked Arnold & Porter in the following practice areas in the United Kingdom:
- Capital Markets: Debt
 - Capital Markets: Structured Finance and Securitization
 - Hedge Funds
 - M&A
 - Restructuring and Insolvency
 
The IFLR1000 recognized the following attorneys, “based on transactional evidence, client feedback, and peer recognition”:
- Simon Firth: Investment Funds – United Kingdom (Highly Regarded)
 - Ewan Townsend: Corporate and M&A – United Kingdom (Notable Practitioner)
 - Jeremy Willcocks: Capital Markets: Debt; Capital Markets: Equity; Corporate and M&A – United Kingdom (Notable Practitioner)
 - Tom Wilson: Financial and Corporate – United Kingdom (Rising Star)