Dixi188
You are right of course and I should have spotted that. My source was Airliner Production Lists for 1980/81.
I was on board VT at Duxford this summer and can report its in reasonably good nick. It appears, at last, that Monarch's apprentices visit regularly as part of their training to do relevant work.
The beer pump attachment, for a well known TV comedy show, has been removed as has the the master engine start switch!!