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. Appointed Deputy Chief of the London Police Service in 2024, she has accumulated more than 28 years of experience spanning operational, investigative, and administrative leadership.

An accomplished Critical Incident Commander and Public Order Unit Commander, Deputy Chief MacSween has led numerous large-scale operations, including major events and complex critical incidents.

She is committed to building strong, collaborative partnerships that advance effective community safety strategies. A steadfast advocate for inclusive workplaces and the wellness of police service members, she consistently champions initiatives that support organizational health, psychological well-being, and the balance between professional and personal responsibilities.

In recognition of her service and leadership, Deputy Chief MacSween was invested as a Member of the Order of Merit of the Police Forces in 2025 and also received the King Charles III Diamond Jubilee Medal.

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.

Deputy Chief MacSween is a proud mother to two daughters, Taylor and Alexis, and 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.