Not great that the e-mail went out at just before 2200 UK time.....
BA seem to be experts at appalling timing. I worked for a BA owned subsidiary once, with BA managers. We were given drastic news (compulsory moves and for several of us demotion) the week before Christmas. "Contact your managers for more information" we were told. Could we contact those managers (all BA employees, who had the cushy safety net of going back to BA)? No, they were all on leave for Christmas.