It would appear that one Peace Lily has perked up, the rest of them died.
I didn't want to post just encase I speak to soon. I just never truly know whether I'm coming or going when it comes to Peace Lilies because they can look healthy but live for a week or live for a couple years or more and in that time they can wilt suddenly then die without any obvious reason.
The important thing is that this Peace Lily has got new growth at the bottom which is a good sign, it wasn't to long ago when I was going to toss it in the trash and give up with it but its looking like it may just pull through. I wont ever be buying these again so this will be my only Peace Lily.
I expect another bit will die because it was very droopy and I tried to pull it out to remove it but it seemed to have strong roots so I left it. The rest looks good.
I had a lot of rotten bits on this Peace Lily where parts of the plant droop then turn yellow so I just pull those out.