Hi, I need some help if anyone can give me some pointers or info...

Back in February, myself and some other people were told we were being made redundant. We were given information of the payments we would receive. I found out that the other guys were given a retention package to stay until October. I was not offered this package so when I asked HR, I was told that the other members of the team were key to the business and their experience was why the retention package was offered to them (I used to do the same role before moving into the role I'm now in).
Fair enough, I stopped fighting for the extra money being offered to the rest of the team. Another role (stand in team leader) was offered to me which I accepted I was given a letter telling me that I had found alternate employment within the company. One of the terms for this role was for me to take a 3 year pay freeze which became effective immediately which i was not told. I was under the impression that the pay freeze would start when I start the new role.

Because of this, I did not receive the annual pay rise which everyone in the company recieved.

I have just been told that the new role for me is no longer available and I am facing redundancy again. Will the company now have to serve me notice again with a new redundancy package? Am I entitled to ask for the pay freeze to be lifted and ask for the pay rise I would have received to be back dated (the other members of the team who are also being made redundant did receive the pay rise).

I'm not sure what rights I have so as I mentioned before any help would be appreciated.