Choose an appropriate time to strike - DO NOT GO ON STRIKE DURING THE WINTER LOW SEASON
There are plenty of spare aircraft about the UK to provide lift to BA during the winter. In the last BA strike, Jet2 provided 7 aircraft to BA. This only occurred because it was the low season and their aircraft were doing nothing. It was extra income as well and to add insult to injury they use these flights to line train their pilots - some of whom are having to pay Jet2 money to train as well
Once the summer season starts, there will be less aircraft available. In addition, Jet2 will probably get bloodied during the summer as they are feeling the chill effects of Ryanair on most of their routes