- 1972-2005 Member of the Association of University Teachers
- 1979-2003 Member of the Social History Society
- 1979- Member of the German History Society
- 1979-88 Committee Member of the German History Society
- 1980-2005 Member of the Association for Study of German Politics
- 1989-92 Chair of the German History Society
- 1993- Member of Modern History Section of the British Academy; 1995-8 Academy Activities Committee; 1995-8 Meetings Committee; Section Standing Committee, 2001; Chairman of Section 2001-4, Member of Humanities Group 2001-4
- 1995-2025 Member, Panel of Judges, Wolfson History Prize
- 1996-9 Patron of the Holocaust Exhibition Wing of the Imperial War Museum
- 1996-2014 Member, Panel of Judges, Fraenkel Prize in Contemporary History (Chair, 2011-4)
- 1996-9 Member, Panel of the René-Kuczynski-Preis für Geschichte
- 2005-11 Member, AHRC Academic Advisory Board
- 2025- Trustee, Wiener Holocaust Library