My relative is booked on an LNER train from Kings Cross to Leeds on a strike day. They've been told they will be notified if their train will be cancelled. In the meantime, they can rebook for another day or cancel. If they wait to see whether it is definitely cancelled it may be too late to rebook. But if they stick with the original booking, what are the chances the train will run? 0%? 25% 50%? I'm not expecting anyone to know for sure, but people who experienced previous strikes might be able to give me some useful insight.