I have not seen this posted anywhere but there is impending possibility of BA’s employees might call for strikes that could start August 10th onward. The employees union has to give BA 2 weeks notice once they set a strike date. BA is intending to appeal a decision by the Court which could happen Friday or Monday so no strike call until then.
In addition, HAL, whose employees staff airport security and in a separate action the Fire Service and rescue personnel at Heathrow are planning strikes for August 5-6 and August 23-24.