redundancy while on sickleave

I am currently on sickleave for two and a half years after a serious medical problem while pregnant I was employed for seven years before i went on maternity leave but i never was able to return after my unpaid maternity leave.I contacted the company and gave them an indefinite sick cert and was assured that all was fine .I got a phone call last week from one of my friends in the company to say that the company is finished and that recievers are coming in next week .I have never been told anything by the company I also have never recieved a P45 or a P60 from them so i am i still employed.What should i do contact them ?Am i entilled to redundancy.
any advice would be great thanks

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