If you get an email for CR or Self selecting they will encourage you to take VR within a day or two of that notice. Under no circumstances accept it.
Once they put you in a compulsory pool you have a series of consultation meetings, you can apply for VR up to 5 days after the first meeting and still get VR on the same terms.
Also even when you get the invite for consultation they need to give you 5 days notice, they try to get away with 1-2 days. and if they demand you attend say you want to bring a colleague in with you that will get you 5 days. It’s law.
That should take some of you into a new months pay cycle.
I’m 100% about this. Until then ride the system. And get paid for doing so.