Thanks for your comments Phil, as I said, nobody was answering the phone today at any of the major users, I have no reason why you would think I was being untruthful about this.
As for garnering information from a public forum, well I know there are a number of professional railway men on here who, if asked could provide me with general guidelines with which I could beat the recalcitrant salesman around the head with the aim being he get of his lazy ass and push the customer for official information, And frankly I'd rather trust rmweb than google.
I can see that the request confused you because you failed to add anything positive to the conversation but, out of courtesy, I took the time to reply to your post. I hope it puts your mind at ease.
Can I ask the mod team to lock this post please as my questions have been answered by a current rolling stock technician