Executive Command Team

Thai Truong was appointed London Chief of Police on June 1, 2023. He joins the London Police Service from York Regional Police with more than two decades of policing experience, working in all four branches of York Regional Police: Support, Investigations, Administrative, and Operations.

He has extensive investigative and specialized expertise in leading various units including organized crime and drug enforcement, human trafficking, intimate partner violence, homicide, internet child exploitation and special victims’ units.

Chief Truong has a strong foundation in leading complex operations that include policing partners and community stakeholders across different sectors. He is a strong advocate for victims of crime, vulnerable and marginalized populations. 

Chief Truong is the only police leader in Canada who has been qualified and recognized by both the Ontario Court of Justice and the Superior Court of Justice as an expert in the areas of drug trafficking, human trafficking and the commercial sexual exploitation of women and girls.

Chief Truong holds a Bachelor of Arts Degree with a Sociology Major from the University of Windsor. He has certificates from York University Schulich School of Business and the University of Toronto Rotman School of Management.

Deputy Chief Paul Bastien began his policing career in 1997, as a member of the Royal Canadian Mounted Police. He joined the London Police Service in 2001 as a Constable. Over the course of his career, he held leadership roles in the Criminal Investigative Division, Professional Standards Branch, and Human Resources.

He has served on the Executive Committee of the Ontario Homicide Investigators Association and has represented the London Police Service on management teams overseeing multi-agency joint forces operations in the areas of human trafficking, cannabis enforcement, and provincial weapons enforcement.

He most recently served as Division Commander overseeing teams of sworn and civilian members performing functions related to training and professional development, research and planning, risk management and quality assurance, evidence-based policing, and business analytics.

Deputy Chief Bastien holds an Honours Bachelor of Arts Degree in Criminology from the University of Windsor and a certificate in police leadership from the University of Toronto Rotman School of Management.

Deputy Chief Treena MacSween began her policing career in 1998 with Peel Regional Police before joining the Hamilton Police Service in 2001. In April 2024, she was appointed Deputy Chief of the London Police Service. With over 27 years of experience, she brings a diverse leadership portfolio in operations, investigations, and administration.

Her expertise includes serving as an accomplished Critical Incident Commander and Public Order Unit Commander, having led numerous large-scale operations for major events and critical incidents.

A visible and engaged leader, Deputy Chief MacSween emphasizes forging collaborative partnerships to develop and shape community safety strategies. She is committed to fostering relationships with the greater London community and is excited to contribute to the modernization of the London Police Service.

Throughout her career, Deputy Chief MacSween has been a staunch advocate for creating inclusive workplaces and prioritizing member wellness. Recognizing the importance of maintaining a healthy balance between professional and personal responsibilities, she has consistently championed initiatives aimed at fostering a supportive and healthy workplace.

Beyond her operational responsibilities, she serves as Co-Chair of the Canadian Association of Chiefs of Police Equity, Diversity, and Inclusion Committee and is an active member of the Ontario Women in Law Enforcement Advisory Council.

Outside her professional realm, Deputy Chief MacSween cherishes her role as a mother to her two daughters, Taylor and Alexis. She shares a strong commitment to public service with her husband, Mike, a firefighter.

Scott Guilford began his distinguished policing career with the LPS in 1992. For more than 12 years, he served in the Emergency Response Unit in various roles and ranks. It was here that he honed his leadership style, developed critical decision-making skills, and deepened his understanding of risk management under pressure.
Scott has served in numerous areas within the organization, including the Investigative Response Unit, Communications Section, and the Administrative Support Branch. He also held all supervisory ranks within the Patrol Operations Branch, ultimately being promoted to Superintendent of the Uniformed Division. In that role, he oversaw three major branches, Patrol Operations, Patrol Support, and Community Mobilization and Support, with a total complement of over 500 members.
With over 27 years spent in the Uniformed Division, Scott maintains a strong and enduring connection to front-line policing. His hands-on experience, collaborative leadership style, and commitment to positive change all position him exceptionally well for his current role as Deputy Chief of Community Trust and Front-Line Operations.