moxon was the anglican chair of the third phase of the anglican-roman catholic international commission (arcic iii) from 2011 until 2018. in this capacity moxon also served as a governor on the board of the anglican centre in rome until 2013, when he became its director,and then resumed the board of governors position from 2017 to 2018. moxon was chair of “the bible in the life of the church” project for the anglican communion, a project endorsed by the anglican consultative council (acc 15) in november 2012; was convenor of the conference of anglican religious orders in aotearoa new zealand (caroanz); a patron of a rocha, new zealand, the christian environment action group; a president of the new zealand bible society, and the chair of the hamilton-based mahi mihinare anglican action, a "justice through service" agency from 1993 until 2013. he was also an inaugural board member of the ngati haua mahi trust, a work skills program for maori in the piako area from 2010 until 2013.