Tim Wallis "has a PhD in Peace Studies from Bradford University and is currently Director of Peaceworkers UK, which develops and runs training courses to prepare people for practical work in conflict areas. He is also co-chair of Nonviolent Peaceforce. Prior to this he was Director of the National Peace Council and worked on a wide range of peace issues on behalf of 200 member organisations throughout the UK. Tim has written on a wide range of peace topics and briefly served as editor of Peace News magazine. Tim has been involved in the development of civilian peace teams for nearly 20 years, founding the British branch of Peace Brigades International and later serving as PBI's International Secretary. During his three years in the International Office, he oversaw projects PBI projects in Central America and Sri Lanka and was involved in developing new projects in Haiti, Colombia and the Balkans. After finishing his term of office with PBI, Tim led an exploration team to Chechnya and played a major role in establishing the Balkan Peace Team. He was involved in the development of the proposal for a European Civilian Peace Corps which has since been adopted by the European Parliament." 
"As training director of International Alert, Tim was responsible for recruitment, training and assessment of people going into peace and conflict work and coordinated the European Group on Training for Civilian Crisis Management (EGT). He was also involved in the development of a proposal for a European Civilian Peace Corps, which has since been adopted by the European Parliament.
"Prior to accepting his position as Program Director of NP Sri Lanka, Tim served as co-chair of NP's International Governance Council.
Dr. Wallis became the International Executive Director of Nonviolent Peaceforce on 1 January 2010.