RDG have, I believe, as have DfT. Has been uncovered before via FOI to OLR. Will try and find the source again.I'd hazard a guess that few TOCs, nor RDG, have issued any sort of staff briefing regarding the PRO, nor on Condition 28 of the NRCoT.
== Doublepost prevention - post automatically merged: ==
Here it is: https://www.whatdotheyknow.com/request/article_16_of_regulation_1371200
I've got a similar request in at Southeastern at the moment: https://www.whatdotheyknow.com/request/information_regarding_article_16
It's infeasible to quote the LNER one as it's at least 50 documents.