Meet our Advisory Board.

Combining expertise and insights to guide our mission effectively.


We are so grateful to be supported by an incredible group of experts in their respective fields.

  • Simon Rosenbaum

    Scientia Associate Professor - University of NSW

    President - Australasian Society for Traumatic Stress Studies

    Simon Rosenbaum is an academic exercise physiologist and Scientia Associate Professor at UNSW Sydney. His research areas are physical activity and mental illness including physical health comorbidities. He is an Associate Editor of the Journal Mental Health and Physical Activity, the President of the Australasian Society for Traumatic Stress Studies, and co-chair of the Olympic Refuge Foundation Think Tank on sport in humanitarian settings. He has consulted to the United Nations in Bangladesh and Nigeria, and is a consultant to the World Health Organisation, Physical Activity Unit.

    The mission of Collective Leisure aligns entirely with Simon's passion and interests. He couldn’t be more excited to be able to work together with Collective Leisure to help ensure more people have access to safe, appropriate opportunities to move.

  • Dr Sharon Zivkovic

    Cofounder - Wicked Lab

    Founder - Community Capacity Builders

    Founder - Centre for Autistic Social Entrepreneurship

    Dr Sharon Zivkovic has been working in the social enterprise sector for over 20 years. In 2001 she received an Enterprising Woman of the Year Award for ‘making communities more enterprising, taking advantage of their communal strength’. She is currently studying a Master of Autism at the University of Wollongong to inform a range of autistic social entrepreneurship programs that Community Capacity Builders is developing. Sharon is a Visiting Fellow in Social Entrepreneurship at Northumbria University in the UK, a member of Emerald Publishing’s Impact Advisory Board, and is recognised as a leading theorist in the Map of the Complexity Sciences for Applied Complexity.

    Sharon has a deep sense of social justice, is passionate about the provision of activities for people with disability and has many years of experience as a practitioner and researcher in social enterprise and systems change approaches. She is proudly Autistic.

  • Jackson Hills

    Manager - Policy & Strategic Engagement, Q Shelter

    Jackson has spent more than 15 years working with non-for-profit and community organisations. After working with a number of sport organisations, Jackson moved into local and state government roles, supporting several state politicians and local councillors in their community work and media engagement, and more recently, Jackson has been leading the policy and strategic engagement efforts at Q Shelter, Queensland’s peak body for housing and homelessness services. In addition to sitting on the Common Ground Gold Coast Board, he is an executive committee member of National Shelter and a mentor to young people at the Gold Coast Youth Service.

    Jackson joined the advisory board at Collective Leisure as he has a deep understanding of the power of sport as a movement for change, social inclusion, and overall physical and mental wellbeing. He is completely aligned with the vision of Collective Leisure and keen to see the model expanded throughout Australia.

  • Karen Creavin

    CEO - Active Well-being Society (UK)

    Karen has over 25 years of experience working in the public sector in Britain, during which she has established a reputation for designing and delivering nationally acclaimed and internationally recognised innovative services and interventions. While working for Birmingham City Council (Europe’s largest local authority, serving over 1.2 million people), Karen set up the award-winning ‘Gym for Free’ pilot scheme in Ladywood, which was then rolled out across the city as the nationally acclaimed ‘Be Active’ program. In 2018, Karen established and later became the Chief Executive of The Active Wellbeing Society, a Community Benefit Society, and mutual cooperative, delivering community wellbeing and anti-poverty services at scale in coproduction with deprived citizens across the country. Karen has also held board positions, and was a member of Sport England’s Investment Committee for 6 years. Karen will bring her expertise to support the work of Collective Leisure through effective governance and also through contributing to the strategic development of the organisation as it continues to grow.

  • Timothy Green

    Governance Specialist - Campbelltown Council

    Timothy has worked within the private and public sectors in the areas of law and governance for more than 15 years. He has specialised in the development of enterprise contract governance and management frameworks. Prior to becoming a lawyer and public-officer, Timothy pursued a professional career in sport and was the proprietor of a highly successful bicycle and sports store in Queensland. A diagnose of Stargardt Disease enabled Timothy to explore career opportunities he had not considered, also also caused him to re-consider his career ambitions of becoming a professional triathlete and racing IRONMAN.

    In 2022, Collective Leisure enabled him to achieve a long-standing personal goal - finish an IRONMAN. They were integral in this journey by providing the encouragement and supports needed for him to overcome the challenges in participation resulting from being a vison-impaired athlete. Being an Advisory Board member will enable Timothy to share his experiences living with disability and governance knowledge.

  • Hayley Lever

    CEO - Greater Manchester Moving

    For 30 years, Hayley has played a leadership role in physical activity, sport, policy, and community development. She is a committed community volunteer and charity trustee where she lives in the Peak District and supports several advisory boards and communities of practice and learning.

    Hayley has always believed in the power of an active life for health, happiness, friendship, and community. She is a passionate advocate of this agenda in her culture change, system change, behaviour change work in Greater Manchester and beyond. She supports, works with, and learns from colleagues across England, and through the Global Community of Practice on whole systems approaches to inactivity and inequalities, which she founded in 2023.

    Hayley’s role involves leading for change and shifting culture and systems across the whole devolved and integrated system in Greater Manchester, including health, local government, charity, private and social enterprise sectors. She has developed her understanding of working in complex systems from a community perspective and a strategic one. She is convinced that a whole system approach to supporting active lives is the only way we will succeed in designing moving back into everyday life and addressing health inequalities.