Management
Our management team, including our leadership team, ensures the smooth and effective running of CTSI.
John Herriman, Chief Executive
John has a background working across various sectors, ranging from commercial through to local government and from the Armed Forces to not-for-profit organisations. A career spanning 35 years has given him an incredible diversity of perspectives on how different sectors operate and how they can work together successfully.
Duncan Stephenson, Policy and External Affairs Director
Duncan joined CTSI in April 2022. He has overall responsibility for the Institute’s policy, campaigning and communications activities.
Phil Owen, Service Delivery Director
Phil is a committed and passionate trading standards professional, that has worked in the trading standards profession for 25 years - as a practitioner and manager in local government, a policy and programme director in central government and for the past 15 years has led a variety of management and leadership roles at CTSI.
Andy Allen, Contact & Advice Centre Manager
Andy entered the trading standards service with Cornwall County Council in 1998, spending 6 years in a variety of roles including consumer advice, business support and food enforcement activities.
Jacqui Guerreiro, Head of Membership and Governance
After obtaining a Diploma for Secretarial Linguists, Jacqui worked for a London buying office for international department stores and then an English language school.
Paul Gordon, Head of IT
Paul has worked at CTSI since November 1997, having previously been employed as an Analyst Programmer at Essex County Council.
Sue Steward, Head of Education & Training
Sue is Head of Education & Training at CTSI, she has worked for the Institute for 3 years, having originally been taken on to drive forward the Qualification Review.
Alastair Taylor, Finance Manager
Alastair joined CTSI as the Finance Manager in January 2023.

Louise Savage, Codes & ADR Manager
Sonia Payne, Education & Training Manager
Sonia has been CTSI’s Education and Training Manager since February 2023 and is in charge of the delivery of a training and qualification provision for the Institute.