This will be at the King and Queen pub (same venue as on 18 September: 1 Foley Street, near the Telecom tower; nearest Tube stations are Goodge Street, Regents Park, Great Portland Street, but check first at the tfl website to see which stations and lines will actually be open).
Times: from 14:30 to 18:00. As most of you know, this venue is "free" but the landlord asks for a donation of one GBP per person to his collection for the Macmillan Nurses charity.
This powwow is soon after the Proz online virtual conference (30 September) and the Language Show (Earls Court, 15-17 October: thelanguageshow; free entry if you register in advance).
I suggest that a few of you, if you attend either of these events, could come to this powwow prepared to talk to the group for just a few minutes about your experience there.