Lucy Siegle

Lucy Siegle is a journalist, broadcaster and climate communications specialist who translates sustainability science into accessible, action-driven insights for mainstream audiences. Known for her work on BBC's The One Show and investigative documentaries including Channel 4's The Truth About Recycling, she has authored influential books such as To Die For: Is Fashion Wearing Out the World? and Turning the Tide on Plastic, and co-founded the Green Carpet Challenge with Livia Firth. As a professional speechwriter for global climate events including COPs and a trusted onstage interviewer of figures from Bill McKibben to the late Dame Vivienne Westwood, Lucy hosts major corporate and public events on decarbonisation and sustainability. Audiences leave her sessions equipped with practical strategies for embedding climate action into their organisations, inspired by her warm authority and ability to make complex environmental challenges feel achievable and urgent.

When Lucy Siegle kayaks the Thames near Hampton Court, pulling discarded plastic from the water, she embodies the practical environmental action she has championed throughout her career as a journalist, broadcaster and climate communications specialist. From co-founding the Green Carpet Challenge with Livia Firth to creating the influential #30wears rule for fashion consumption, Lucy has spent decades translating complex sustainability science into movements that mobilise individuals, industries and institutions. Her investigative documentary for Channel 4, The Truth About Recycling, exposed the UK's extensive use of incineration, whilst her books, including To Die For: Is Fashion Wearing Out the World? and Turning the Tide on Plastic, have shaped public discourse on consumption and environmental responsibility. As co-executive producer of the Netflix documentary The True Cost, she helped bring the hidden costs of fast fashion to global audiences.

Lucy's authority in climate communications stems from her extensive work across journalism, broadcasting and high-level advisory roles. She has contributed to major international climate initiatives including the UN Oceans Dialogue and COP26, where she reported for Times Radio and presented live events alongside climate activist Ellie Goulding. As a professional speechwriter for global leaders at COP summits and other major climate events, Lucy crafts messages that resonate with policymakers and the public alike. Her work as an onstage interviewer has included conversations with figures such as the late Dame Vivienne Westwood, Bill McKibben and George Monbiot, whilst her hosting portfolio spans corporate decarbonisation events for BMW, the Association of British Insurers' climate conference and the main stage at Reset Connect during London Climate Week. As a trustee for Surfers Against Sewage, chair of the Real Circularity Coalition and ambassador for WWF UK and The Circle, Lucy applies her communications expertise to driving systemic change across multiple environmental and social justice fronts.

Audiences leave Lucy's sessions equipped with tangible strategies for embedding sustainability into their organisations and daily lives. Whether hosting major conferences, moderating panel discussions or delivering keynote addresses, she combines rigorous research with accessible storytelling that makes urgent environmental challenges feel solvable rather than overwhelming. Her warm authority and unflappable presence onstage create space for honest dialogue about difficult topics, from supply chain decarbonisation to circular economy transitions. Lucy transforms complex sustainability science into clear, actionable insights that inspire immediate engagement whilst building long-term commitment to environmental stewardship. Her ability to connect individual choices to systemic impact ensures that participants understand their role in creating meaningful change, leaving events motivated to act with both practical tools and renewed purpose.