Lawrence E. Thacker stands out as a key figure at Lenczner Slaght, recognized by Chambers Canada for his strategic and practical legal guidance. A titan in the Canadian legal landscape, Lawrence's practice cuts across a spectrum of critical areas including mergers and acquisitions, shareholder disagreements, and intricate class actions to infrastructure disputes, procurement, and tax litigation, among others. His prowess extends to leading complex international commercial arbitrations, particularly those involving significant energy infrastructure and power generation projects. Lawrence's courtroom presence spans all tiers of Canadian courts, up to the Supreme Court of Canada.

In addition to his legal practice, Lawrence is committed to legal education, demonstrating a decade-long commitment as an adjunct professor in the University of Toronto's Political Science Department, teaching international law. His teaching journey continues at Osgoode Hall Law School since 1998, where he enriches students with trial advocacy and participates in the Intensive Trial Advocacy Workshop as a team leader and instructor. Furthermore, Lawrence contributes to The Advocates' Society by teaching trial advocacy skills.

Lawrence's areas of expertise include Appeals, Arbitration, and more, with his legal practice authorized in Ontario. His academic achievements are noteworthy, with legal studies at Dalhousie University and the University of Oxford, complemented by advanced studies in philosophy and politics at the University of Toronto.