Bay's last post before being ordained to the episcopate, at age 45, was as the 8th Dean of Holy Trinity Cathedral from 2007 to 2010.[2][3] While Dean of Holy Trinity, he officiated the funeral of Sir Edmund Hillary on 22 January 2008.[4]
Bay currently serves on the board of governors for private secondary schools King's College and Diocesan School for Girls which both have strong links to the Anglican church.[5][6] Other governance roles include Chairman of the Diocesan Council, Chairman of Trustee of King's College, Trustee of the General Trust Board, General Church Trust Board, Auckland City Mission and president of the Selwyn Foundation.[7] Bay is a volunteer officer in the Auckland Operational Support Unit of Fire and Emergency New Zealand.[2][7]