
Preeminent in anti-bribery matters and investigations across Canada, Blake, Cassels & Graydon LLP also excels in criminal defence and trial litigation. The group provides crisis response for corporate clients, such as defending against criminal and regulatory search warrants, and advises clients in relation to Canada’s anti-corruption laws. Directing the practice, Mark Morrison KC has notable proficiency in multi-jurisdictional internal investigations, anti-bribery and corruption matters. Another standout member of the team is Sean Boyle, who focuses on defence of securities prosecutions, fraud and government investigations. Iris Fischer is a key advisor on criminal and regulatory enforcement. John Fast was promoted to partner in January 2025.
Legal 500 Editorial commentary
Key clients
- AtkinsRéalis
- Global Crossing Airlines Group Inc.
Work highlights
Acted as a compliance monitor for AtkinsRéalis (previously, SNC-Lavalin Group Inc.) since 2020.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Sean Boyle

Iris Fischer
Practice head
Mark Morrison KC
Other key lawyers
Sean Boyle; Iris Fischer
