CES: Plagiarism or Collaboration?

And now, following my previous posts here and here, I have just been pointed at another source document for the CES guidance, this one from lgbtyouth Scotland. Compare, for example, page 7 of this with page 12 of the CES doc: identical wording. Likewise some of the case studies....

Again, the questions proliferate: is this collusion or plagiarism? Why is there no acknowledgement of these sources on the CES document? Who wrote the CES document? Why does his name not appear on it?

This is getting embarrassing for Catholics; and even more so, one imagines, for the CES. Perhaps Paul Barber (remember him from the Vaughan school shenanigans ? - now director of CES)  can explain what is going on...