I believe that sooner rather than later the government WILL act to control some aspects of union activity that goes unfairly against those who do not want constant threats of IA. Unions have to accept that using tactics that date back to the '70's is not, and never will be, acceptable. But what do we have now? ASLEF have jumped on the bandwagon along with Unite and RMT run by three of the worst union protagonists of modern times, who constantly find one reason or another, it seems not to matter what, to hammer the employers.
Just look at Unite's reasoning (?) unprotected prospect of a strike! RMT's - safety - well maybe! ASLEF - triple pay and a day off in lieu. Having ignored a previous agreement. And all well paid employees!