You don't say how long you have been employed at that company so I can't say whether you will be eligible for redundancy. If you jump ship you will not get JSA for a long time. Better to stay and hope. Take anything you are offered and look for alternative work. Always easier to find a job when you are employed. If the company want you to go on garden leave they will tell you. Redundancy process will take a while as they have to consult. Make sure you have instructions from your manager about what you are expected to do when you have no work, preferably in writing.