I knew I'd seen something about it on the official site, and have just trawled through while watching BB6 cheerleaders (Craig - not your best look, really). Nearly tore hair out, as hunted high and low, a-ha, but finally discovered on the Website survey results story on the News archives:
Quote:
“And, for those who asked, 23-6-801 started as a mistake on the Psalm board in episode 8, and became a bit of misleading fun. But thanks for all your theories on that one.”
(
BBC DW site under WhoSpy)