To summarise a very long series of events:
I've worked for a company for 6 years. 2 years ago they made my role (A) redundant. The company job matched 8 of us to 4 new roles - Role B.
Most of the team wanted to go anyway, so only 4 of us applied for role B, which we all got. None of our T&C's were changed, but a new JD was provided for role B.
They are now proposing that the 4 of us in role B change job role again to a new role C.
I'm putting my foot down this time and saying I refuse to transition to role C. They claim that they can do this under my T&C's. I've checked these, and while it mentions they can ask me to do "other duties" it does not mention a role change.
To add insult to injury they "created" Job A again six months after making us all redundant from it, and without advertising the role just stuck one person in it.
I'd be happy to take voluntary redundancy as both role B and role C are menial compared to Job A. However, they are not interested in offering VR, so my choice is leave without VR, formal grievance or legal.
I'd welcome any other views.