If you have an issue that you really feel strongly about, the loss of staff travel is going to be the least of your worries and is therefore not a deterrent. It is however, a deterrent to anyone going on strike over something stupid such as was the case here. Practically everyone I have spoken to says that they went on strike because BA imposed. Well I am sorry, but if you refuse to negotiate, that is what is going to happen! What else could any business do? The other option was SOSR and 90 days notice. Would you really have preferred that?
If the removal of staff travel was hindering your freedom to strike, you will get it back through the courts. So you don't have anything to worry about do you?
I stand by what I said, and I hope Mr. Walsh does too.