I just want to correct something GS Alpha said. The workforce wasn't replaced at LGW by the 6 month temps from LHR. At the end of their 6 months, they had the option to leave or go to the Single Fleet. There was nowhere near enough of them to 'replace' us. If the Single Fleet at LGW hadn't have happened, most of us would be happy to stay at LGW and the recruitment drive wouldn't have happened. There was a massive recruitment drive in the summer for the new fleet, not euroLGW.
LHR_777, there is no date as yet. However, the union (BASSA) have to give a minimum of 7 days notice to BA of strike action and the strike has to happen within 28 days of this notice. All ballot papers have to be in by 12th Jan, so you can safely say it'll happen (if a yes vote is received) between 15th Jan and 12th Feb.