Heard of a UU church that was Anglican at one time. That it still had anglican-inspired worship. I didnt know there was such a thing as High Church Unitarian?
I also heard about their Unitarian safe Book of Common prayer? If anyone knows where i can get a copy i would be very happy.
You might be thinking of King's Chapel in Boston.
http://www.kings-chapel.org/
History
"King's Chapel was organized as an Anglican congregation at a meeting in Boston's Town House, the city hall of the day, on June 15, 1686. Its first house of worship was a small wooden meeting house at the corner of Tremont and School Streets, where the church stands today, that was dedicated on June 30, 1689."
The also sell the Book of Common prayer...see FAQ
"We sell used copies of the 1952 (black) edition of our prayerbook at the Church for $10.00 or via mail for $12.50 (including shipping and handling). We no longer have copies of the current edition (1986, red binding) available for purchase."