Oh, it did happen. With BALPAs being neutral about it too. Which is pretty much the same as saying, well, go ahead with it. A union that is offically "neutral" about what you call scabbing, and behind the scenes very much in favor, that is what happened in a nutshell.

See also https://www.express.co.uk/news/uk/15...rew-strike/amp

https://www.wsws.org/en/articles/2010/05/brit-m17.html