Sorry to hear that mate, hope you qualify for a payoff and the company puts its hands in its pocket for more than statutory.
Was it a decision-making process or a "consultation period"?
Either way you are probably right to smell a rat – they’re supposed to make posts redundant, not people. but your evidence is pretty thin and you will probably never be able to prove the company broke employment law.
Are you a union member? If so, ask your full-time official for advice.
If not, you could still try to use your observation if you have the opportunity to negotiate your payoff at all. They’ll deny it, but you can still tell them how bad it looks and score a point.