 He has given evidence to UK Parliamentary Select and Legislative Committees, the Supreme Court and in the immigration tribunal on the issue of Jewish status.He sat on the Charity Commission's Faiths Advisory Council and has acted as a 'critical friend' to the commission, providing advice on the Public Benefit Guidelines published in 2008.He chaired the Chief Executives' Forum for Jewish Charities and is a member of the Policy Research Advisory Group of the Institute for Jewish Policy Research and a board member of the World Council of Jewish Communal Service.