We have an established network of expert individuals. We are able to build bespoke teams for individual client requirements, managed and co-ordinated by Challenge Sustainability.


Adrian Henriques

Adrian Henriques is an adviser on corporate responsibility, social accountability, supply chain issues and sustainability. He has worked with companies, NGOs, social enterprises and the public sector. He has also produced research on social sustainability and taught widely on accountability, stakeholder engagement, social impact measurement and social auditing. Adrian is a member of ISO/PC 308 which developed ISO 22095, a Chain of Custody standard, as well as Chair of the UK mirror committee. Adrian also chairs the Reporting and Assurance Committee of Social Value International. Adrian was for five years a member of the Global Reporting Initiative Steering Committee. His publications include: ‘Traceability: towards a history of everything’ BRE, ‘Corporate Impact: measuring and managing your social footprint’ and ‘Corporate Truth: the limits to transparency’.

Asri Putri

Asri Putri is an Indonesian consultant with more than 11 years of professional experience in different organizations. She graduated cum laude Master of Marketing Communication from the University of Indonesia. She began her career in the communication field and progressed to work for the sustainability and communication department at Sinarmas Asia Pulp and Paper, one of the biggest pulp and paper companies worldwide. Asri is now an independent sustainability and communication consultant. Since 2018, she has provided consultancy for the Anambas Foundation and acts as Program Manager. In 2019, she founded a social enterprise called Echosystem Indonesia.

Grace Cheah

Grace Cheah is a Singapore-based associate of Challenge Sustainability, providing sustainability related consulting services. She has 12 years of experience in consultancy and auditing for various management system and social compliance standards. Grace previously worked for DNVGL in their Singapore office, responsible for sustainability assurance work with clients including Globe Telecoms, Manilla Water, and Keppel Corporation. Grace has an Advanced Certificate in Training and Assessment (ACTA) and has delivered public training for organisations such as Singapore Stock Exchange, Singapore Green Building Council and Singapore Management University. Her previous experience includes report writing and external assurance on sustainability reports and integrated reports for various companies including CH Offshore, Memories Group, Yoma Strategic Holdings, and Sembcorp Marine.

Lucy Connell

Lucy Connell has over 20 years’ experience in the global telecommunications and sustainable business sector. She now works as an independent consultant with a specific focus on sustainability and environmental reporting and disclosure. Lucy was Group Environment Manager at Vodafone where she was responsible for developing Vodafone's environmental and climate strategy and emissions targets across the worldwide operating companies in the Group. Prior to that Lucy was in the sustainability team at Nokia for 10 years where she held various environmental management roles addressing design for environment, supply chain and recycling.

Adrian Sargent

Adrian is an Associate Consultant of Challenge Sustainability. He is a Chartered Accountant with significant Treasury senior level leadership expertise and a passion for Sustainable Finance. His career experience spans Banking (Investment, Corporate, Business and Retail), Asset Management and Strategy with organisations as diverse as Virgin Money plc, BlackRock Inc., Tesco Bank, Morgan Stanley and HBOS plc. Adrian is completing his Advanced Diploma in Treasury Management, to become a Fellow of Association of Corporate Treasurers (FCT). He is a member of the Advisory Board of the Sustainable Finance Live. Adrian is a Director of ESG Treasury which he has founded to deliver sustainable finance solutions for clients.

Jerry Marcelinus Winata

Our representative in Indonesia and South East Asia. Jerry is a passionate professional possessing strong network of opinion makers and industry leaders with over ten years' experience delivering high-value, high-impact communications initiatives in the public and private sector. Previously Jerry was Communications and Private Sector Engagement Officer for the United Nations World Food Programme (WFP), based in Jakarta. Before this position he was a Communications Consultant for the World Bank.

Mark Line

Leadership work in Corporate Responsibility, Co founder of AccountAbility Rating TM, published in FORTUNE Magazine, Co-founder of Tomorrows Value Rating TM, Lead International Advisor to UNDP on CSR, Board Advisor - Sancroft. Specialties: CR and Sustainability strategy, Stakeholder dialogue, Environmental management, Sustainability reporting and communications, Sustainability assurance. Over 30 years experience in sustainability advisory work. Co-founder of CSR Network and Two Tomorrows Group.