in 2006, moxon was appointed as the senior bishop of the new zealand (pakeha) dioceses and in 2008, a primate of the anglican church in aotearoa, new zealand and the pacific, as part of new zealand's new tripartite model of anglican episcopacy. as a primate he worked alongside william brown turei (maori) and winston halapua (polynesia). also in 2008, moxon's diocese, waikato, was — uniquely for any anglican diocese — altered such that the bishops of waikato and of taranaki would be co-equal diocesan bishops. philip richardson, whom moxon had appointed as the first (and only) suffragan bishop "in" taranaki became moxon's equal as bishop "of" taranaki and in 2010 the diocese was renamed the diocese of waikato and taranaki. richardson would later succeed moxon as archbishop for the new zealand dioceses.