.... by a 'report' into clergy robes and mission.
A report? Not really. The 'report' turns out to be a Grove Booklet, which are sort of long essays on a variety of topics, and widely read because they're booklets, rather than reports. It's not the first time they've covered this topic - there was another Grove booklet on clergy clothes in 1996. The Grove tagline is 'not the last word, and often the first' - i.e. they are supposed to be provocative and open up debate.
Unfortunately other sources are quoting the Telegraph, rather than checking the source of the information by Googling it. So if you can't beat 'em:
"The existing law, which makes robes obligatory for all, belongs to a bygone world. In the 21st century Anglican ministers must at last be given the freedom to decide their own clothing, in consultation with their congregations, based on their local setting," said Mr Atherstone, a tutor at Wycliffe Hall, Oxford University.
Methinks: fair enough.
Update: Dave Walker has, as you'd expect, given this some serious thought and in-depth analysis. 1000 words-worth, anyway.