SARAH HOLLOWAY is an independent consultant in sustainability strategy and communications. She specialises in supporting sustainability leads and managers through the tricky process of creating real, lasting change for sustainability. She has held senior sustainability roles at Unilever, Tesco and TUI Travel, working on sustainability strategy, policies, reporting, consumer and employee engagement - and, of course, leading global networks of sustainability champions. Before moving in-house, she was a director of sustainability communications agency Futerra, where she worked with clients in the...