For whatever reason I could not get your first link to open Iains.

I can use the internet however and the article cited by the professor made no reference to an apology.

So my next questions are who is Roy Bentham, what on earth is a "Trade Union Liaison Officer" and does that role given him the authority to "advise" a sitting MP on that they can and cannot say and what that sitting MP can or cannot do.

In other words is he a jumped up little oik shouting his mouth off. You may want to recall that:

1. "local branch officials of the Wavertree executive later dissociated themselves from Bentham's comments"

2. "It was a post by a local Momentum group, not by Momentum national. When we found the post we got in touch with the local group and they were happy to take it down as it didn't accord with Momentum's aims and values. In an organisation of 27,000 members, people will sometimes express views that aren't representative of the organisation."