I sort of agree that the over reach of TRAs has effed it up for others.
In fact allowing shared interest groups, networks, to meet if work time was a recognition that many can not make out of work meetings. And this leads to discrimination. ie more likely to be men who have the time through lack of caring committments to meet after work. Not forgetting those who have to travel long distances.
So whenever the meeting is, if the link is having the same employer then it should be a positive way to find out if eg as a woman certain aspects of the work structure or office culture are having a nagative impact on their work. That is totally different to using an office network to become a lobby group for a political campaign ie going beyond providing for people with different needs, to insisting that their needs are imposed on others, do their detriment.
Although I suspect this is in fact about quite an elite work place.
I very much doubt that those working in retail, or physical work, have these networks.
Not forgetting of course that the Civil Services is part of how politics works, or is put into practice, in the UK. So maybe there are other senistivities to consider I suppose.