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"William Sieghart is a member of Reprieve's Board of Trustees.
"Co-founder and Chairman of Forward Thinking, William has a distinguished career in publishing and the arts. The founder of National Poetry Day, the Forward Poetry Prize, the Big Arts Week and Bedtime Reading Week, he also founded StreetSmart: Action for the Homeless, and is a governor of the British Institute of Human Rights. William is chairman of the Arts Foundation, was a member of the Arts Council from 2000 – 2006, and is chairman of its Lottery Panel." 
- Vice President, Hay Festival 
- Trustee, Esmee Fairbairn Foundation 
- Advisory Panel (2009), Resurgence