The Fed & AWPC now need to club together and push the HSE on this matter. Also a top lawyer needs to be found to fight for it's members, it will be at a point where words will make no difference but needs to be fought out in court with compensation in mind.
It needs to happen now not when the ban starts, if this rule applies to window cleaners then ban it in industry as well. Window cleaning is an industry so if they do not ban it in Industry they cannot ban it for window cleaning. These are the points a top lawyer needs to look at.
For example ban it in Industry then beer shortage, I'm sure there then would be an outcry.