Consultor, Pontifical Council for the Interpretation of Legislative  Texts

Consultor, Congregation for the Doctrine of the Faith

Member of the Special Commission dealing with In Favorem Fidei  cases, CDF

Referendarius Praelatus of the Segnatura Apostolica Judge, Ecclesiastical Tribunal, Vatican City State

Member, Consiglio Scientifico Superiore Internazionale, of the Studium Generale Marcianum, Patriarchate of Venice

Academic Associate Member, Centre for Law and Religion, Cardiff University, Wales

Member of the Editorial Committee, The Jurist

Canon Law Society of Great Britain and Ireland

Canon Law Society of America

Ecclesiastical Law Society

Fellow of the Royal Historical Society (F.R.H.S.)

Member of the Consociatio Internationalis of the History of Medieval Canon Law Selden Society

History of Canon Law

Book One

Magisterium