The Diocese of BC is holding its 93^rd synod and Fred Hiltz in his Primatial address answered the question. I’m not sure why he chose this question, since his main area of expertise is Experientially Discerning™ that which divides Anglicans. Nevertheless, here it is:

“What holds us together as Anglicans?” He then listed the usual marks of unity that are commonly cited as maintaining unity within the Anglican Communion – our common faith and tradition, the office of the Archbishop of Canterbury, the Lambeth Conference, the Primates’ Meetings, the Anglican Consultative Counsel. He suggested that beyond these we are also united in the Eucharist, in our use of the Worldwide Cycle of Prayer and in our Companion Diocese Program.

At least he’s clear that it’s not the Bible or Jesus that unites Anglicans.