If the archbiship were filled with the spirit he would speak with authority.
That ability to speak with authority is not a function of his position, it is entirely a function of spirit. Once the spirit departs a church it is gone. If the spirit is not present, it doesn’t matter what your title is.
The way to reclaim a church is to first reclaim the spirit. The way to reclaim a country is to first reclaim the spirit.
Post-Christian Britain is a mission field. It has to be reclaimed for the faith. If you are catholic or evangelical, the answer is the same. It has to be reclaimed. Don’t be shy. Preach Christ and let the chips fall.
The Anglican Communion is NOT structured to give the Archbishop such authority as is given the Pope.
The only way to reclaim the infilling of the Holy Spirit, is to reclaim obedience to the authority of His inspired word, the Bible.
Until the Archbishop of Canterbury, and the other bishops and priests in the Church of England, do that, talking about being filled with a "spirit" is worse than worthless.