Castle Forum × Octopus Energy: The Future of Business
The first Castle Forum event of 2026 brought together leading experts for a panel discussion and audience dialogue on how business can be a force for good at a time of systemic crisis and short-term political pressure. The discussion explored what credible positive impact looks like in practice, and what it takes to protect purpose when the context shifts. The evening also marked the relaunch of the Castle Debates as Castle Forum, and the first event held following the passing of our founder, Pamela Castle OBE.
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This session explored the future of business through the lens of purpose, impact and resilience. Discussion focused on how businesses can deliver genuine societal value while remaining commercially successful, and what structural, cultural and political conditions support or undermine that ambition.
Key questions
How can business be a credible force for good at a time of disruption and democratic backsliding?
What distinguishes a purpose-driven culture from purpose as a marketing exercise?
What structural and governance levers can protect a business's mission when external pressures mount?
How should the sustainability sector communicate differently to bring more people with it?
What role can technology, data and AI play in accelerating or hindering progress on climate and energy?
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Speakers
Ed Gillespie — futurist, writer and co-host of The Futurecast podcast
Sarah Mukherjee MBE — CEO, Institute of Sustainability and Environmental Professionals (ISEP)
Sarah Gillard — CEO, Blueprint for Better Business (joining virtually from Anthropy, Cornwall)
Mario Lupori — Commercial Director, Octopus Energy
Chair
Micael Johnstone — Castle Forum Chair & Partner
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Location: Octopus Energy, 164–182 Oxford Street, 5th Floor, London W1D 1NN
Format: Panel discussion and audience dialogue
Attendance: Free, held by prior registration
Schedule: Doors and arrival from 17:30; panel discussion and audience dialogue 18:00–19:30; drinks, pizza and networking