Puesan advises clients on a wide range of regulatory and compliance matters, including: authorisation and perimeter issues; prudential and conduct of business requirements, regulatory filings, regulatory investigations, insider dealing and market manipulation issues and EU regulatory matters, such as MiFID I/II, MAR, 4MLD, EMIR, AIFMD, IMD/IDD and PSD.

She is a contributing author for Lexis Nexis Financial PSL.