Julian and common sense
As far as I can see Julian is the first to put in print what many have thought over the years. I am not a lawyer so offer no advice but I cant see the point of a libel action for something that so many know to be true and anyway I don't see anyone saying they are going to sue.
The good news is that I have heard on the grapevine the "elstree maintenance" (cant we say the name?) team have a new lead engineer joining who, I know, is of excellent pedigree .... maybe the owners have taken Julian's thread seriously .. if so well done to Julian, a man amongst sheep...... I hope you get some compo, yet may be able to return and know you have improved the facility.