No insurer will take the case on. The fact that notice has been given by your company of potential redundancies means that you are at risk of redundancy and therefore uninsurable on a policy for this reason.
A stupid question, but why are you suddenly looking for unemployment cover if you are in no danger of being made redundant. The simple answer is that you are in danger and you want to cover yourself and the insurers will not want to cover this risk, even if it is a 1 in 10 chance of it happening. You wouldn't jump out of a plane with a parachute that has a 1 in 10 chance of not opening.
I think that if you read the policies a little closer you will see that if any notice has been given by the company of redundancies that could affect your position of employment then the insurer will decline to take the risk on. They do not need to state the odds of that risk, they can just decline to take the risk on full stop. The insurance is not your right, it is a service that the provider is offering and they can withdraw that right if they feel the risk and balance is not in their favour.
You will also find that unless you have a similar policy in place already that you would have a "lie in" period of upto 180 days (some providers are only 90 days) where by you could not make any kind of a claim for loss of employment. These periods are designed specifically to combat the risk of potential redundancy.
You can take your chances with a policy but i think you may find the insurer would decline the claim in the event that you lose your job and this would only end up as a waste of your time, effort and premiums paid