Out of curiosity and maybe not relevent to this thread, I have just checked flight prices from Madrid to London on 21st Dec .
There are 4 Easyjet flights to Gatwick priced at 23, 28, 28 and 35 euros.
Wait for it - BA price to Heathrow - from 894 euros. I don't get it. Who the hell is going to book BA strike or no strike.