It was a fair while ago that I reviewed Paul Bradshaw, Ancient church orders on this site. I had just received my copy from the publisher through Prof. Bradshaw’s kindness, and had read and reviewed it the same day.
I have noticed that the post is still getting traction, and on re-reading it recollect that, at the time, although the work was in print it was not available. It is, of course, readily available now, and can be obtained from the Alcuin Club at
http://alcuinclub.org.uk/product/ancient-church-orders/ Possibly the best £8 (plus p&p and minus a shilling) you will ever spend.