Its hardly acceptable for official guidance to be just "replaced" by some research published by (no offense) an ad-hoc collection of interested parties with no statutory authority. If the CIEH/CLAIRE/SAGTA stats paper is to replace CLR07 Annex 1 we need to be told this is so by someone at the sharp end, otherwise it has questionable standing, especially when consultants get into "my best practice is better than yours" style arguements with each other