Spoke with a union rep a couple of weeks ago about this and was surprised that they are advocating a yes vote. When I asked what the rationale was for them recommending a yes vote, the answer was " a No vote means the company will screw you with statutory redundancy terms, a Yes vote means
they will still screw you but just not as much and give you £750".
They must have spent minutes around the negotiating table fine tuning that delightful deal.