I just wanted to drop this in quickly for anyone who is flying on Tuesday.
According to a post on Flyertalk on Monday evening from someone who is known to be a British Airways employee, the Terminal 5 Galleries North lounge and the Terminal 5B Galleries lounge will be closed from Tuesday.
The other lounges will reportedly remain open:
Terminal 5 Galleries South
Terminal 5 Galleries First (which is at the South end)
The Concorde Room (which is at the South end)
The lounges in Terminal 3 and Gatwick South will also remain open.
If it turns out that there are any changes to this tomorrow, we will write an update.