Re: Sage Advice
This is not necessarily sage advice.
1) By law, the company cannot subsequently discriminate against employees who volunteer, but are not accepted for VR, and tribunals are often sympathetic to employees who bring such cases forward under 'constructive dismissal' or the like;
2) If you volunteer, but are not accepted for VR, this is a de facto acknowledgement by the company that the role is not redundant. If they then try to force you out later on CR, they would have to show what had changed between the time of the VR being refused and CR being imposed. Refusal of VR is also likely to be taken as at least highly suggestive of adequate performance in the role, which would make any subsequent attempt to 'get somebody out' under a PIP (Performance Improvement Plan) more difficult.
If you are ultimately willing to contest your case at an employment tribunal if necessary, or at least fight your case to the point where the company thinks it's not worth the effort and backs down (i.e. offers a Compromise / Settlement Agreement) then applying for VR can put a marker down which can be useful later.