British Unitarian minister and blogger Stephen Lingwood gives us his annual update of membership numbers in the Unitarian and Free Christian Churches in England, Wales and Scotland. (Northern Ireland and the Republic of Ireland have a different history and related, but distinct, denomination.)
The news is not good; a sharp decrease. Reminds me of the opening sequence of the re-imagined Battlestar Galactica series, which gives the census of surviving human beings. The British Unitarians and Free Christians now number 3,179. When I was a youngster, it was about 15,000.
He refers to an annual report. We don't get them on this side of the Atlantic, but you can download one. (PDF)