in retirement moxon has been made patron of the faith community nurses association; he pīhopa āwhina (an honorary assistant bishop) in te manawa o te wheke since 2017; a member of the proprietor's board of taranaki diocesan school for girls stratford,a member of the board of trustees of st paul's collegiate school hamilton, a board of governor's fellow of college house christchurch and priory dean-elect for aotearoa new zealand, of the most venerable order of the hospital of saint john of jerusalem (order of st john). he rejoined the ngati haua mahi trust in november 2018. moxon is co-chair with cardinal tobin of new jersey, of the walking together foundation advisory committee, which seeks to fund catholic and anglican bishop partnerships for aid, development, justice and peace globally.