This may be old news (I have done a search though) but received the Executive Club newsletter email today, and this was one of the news items;
https://www.britishairways.com/trave...club/_gf/en_gb
As of yesterday (4 August), apparently the old First/Gold check-in area in T4 was closed and they've opened up desks in the Club World zone instead (not sure what purpose this serves really).
The newsletter then goes on to explain what we already knew - the First lounge has reopened etc.
Again, this may be old news, but I posted just in case.