Meet the team

Core Team

Sonia Roschnik, Director

Sonia has worked in health and social care for the past 30 years as a clinician, in senior hospital management and in sustainability. Sonia worked for the SDU from 2008 to 2016 and before coming back as Director, was based in Abu Dhabi as a freelance sustainable health advisor whilst completing a Masters’ degree in Systems Thinking. 

Jerome Baddley, Deputy Director

Jerome has worked in 17 years in sustainable development with 10 of those years in leadership roles. Most recently he was Chief Executive of an environmental social enterprise and Low Carbon Sector Chair of a Local Enterprise Partnership in the East Midlands. He led a team to produce the first full NHS carbon management plans (2008), the Nottingham City 2020 Energy Strategy (2010), and the regional natural resource footprint for the NHS in the East Midlands (2012). He has spent 10 years supporting health and social care organisations, businesses, third sector and communities to implement strategic and practical measures in sustainable development and resource efficiency.


 Laura Wilkes, Deputy Director - Partnerships

Laura is Deputy Director for the Sustainable Development Unit, and over the past year has been leading the Health New Towns programme. Laura previously led the NHS Healthy Workplace programme and the Elective Care Rapid Testing programme, and prior to joining the NHS in 2015, spent 10 years working in local government in a range of roles.


Kim Croasdale, Strategy Advisor - Regions and Networks

Kim joined the unit in Summer 2017 to manage the Unit's approach to support and facilitate networks of health and care professionals across the country who want to take action on sustainability. Previous roles have included running behaviour change programmes, specialising in working in health and care organisations, and embedding education for sustainable development into further and higher education curriculum.

Imogen Tennison, Strategy Advisor

Imogen's has experience in bringing health, sustainability and information systems together. She has worked with the Sustainable Development Unit since it was formed in 2008, and prior to that she created activity modelling systems, and worked with public health indicators and hospital systems including clinical information and theatre utilisation. Imogen prides herself on working collaboratively, living sustainably and tries not to project manage everything. In addition to her work life, she is a painter and photographer. 

Eleni Pasdeki-Clewer, Sustainable Procurement Adviser

Eleni is an experienced sustainable procurement manager who will be taking the Unit's sustainable procurement agenda forward. Prior to joining the SDU, Eleni designed and led sustainable procurement and sustainable supply chain programmes for the Department for Environment, Food and Rural Affairs (Defra) and KPMG, and has also worked in the Sustainable Procurement team at the Department of Health.

Jamie Hyde, Strategy Advisor

Jamie joined the SDU having worked in strategy and policy for specialised commissioning in the NHS. He originally began his career in the NHS through its graduate management training scheme, working in provider organisations in quality improvement, informatics and management roles.


 Tim Horsfield, Sustainability Projects Analyst and Programme Manager 

Tim has joined the SDU team in a new role based in the Leeds office. Tim brings a variety of experience in working with NHS England analytical teams, having first joined the Performance Analysis Team (Central) following completion of his PhD in Physical Geography at the University of Hull. Tim has since worked on delayed transfers of care and bed occupancy, ambulances and 111, along with mental health with the Data, Analysis and Intelligence Service.  He joins the SDU from a role with the Continuing Healthcare team in PAT Central, where he also provided analytical support to the Clinical Review of Standards for Urgent and Emergency Care.

Ayse Gungor, Strategy Analyst

Ayse joined the SDU after completing the Policy and Strategy NHS Graduate Management Training Scheme. She has worked in various organisations as a Policy Advisor, including NHS England, the Department of Health and Social Care, and for Oriel at Moorfield’s Eye Hospital Foundation Trust. Ayse is passionate about sustainability, and is the organiser of TEDxNHS, where sustainability is now a particular focus. Ayse holds a Master of Research in Neuroscience and is completing her Masters’ in Health Policy.

Simon Briggs, Communications Manager

Simon's communications career has taken in a wide range of roles across the NHS, health sector, academia and construction. He recently returned from a secondment leading public relations for a new sustainable community developed by the University of Cambridge. 

Simon's communications experience includes events, campaigns, stakeholder engagement, media relations, marketing, content and digital communications.

Amy Richardson, 
GMTS Policy & Strategy Trainee

Amy recently joined the unit as her final placement of the NHS graduate management training scheme. She was previously based with NHSI where she worked on Workforce Deployment Systems, and in a Community Trust managing a team of administrators. She has also just spent 6 weeks working in a charity which supports the families of people with substance misuse. Amy hopes to bring the learning from her varied experiences with her into her work on the Air Quality programme.  

Hiten Patel, Senior Strategy Advisor

Hiten joined the SDU in October 2019 and is leading the work on single use plastic reduction in the NHS. Prior to this he worked as the Policy Lead on the NHS England Learning Disability and Autism Programme as well as holding roles in the Department of Health and Social Care. the NHS Litigation Authority and in Parliament. Hiten studied Economics, Politics and Public Policy at Goldsmiths, University of London.