Hostas should be fine left outside in a sheltered spot - just make sure the pots don't freeze solid if the winter's tough. As for the 'arum' lily, if they're actually Zantedeschia, it depends which one they are - if the leaves have silvery spots, they won't be hardy and need frost protection indoors. If they're Zantedeschia 'Crowborough' that's fine to leave outside.

Thanks for that Bamboo, as the picture shows they don't quite look a picture of health I am just hoping that they recover, as I said they had plenty of roots.

They'll disappear completely during the winter, so you won't know till spring arrives and they start growing (or not) whether they're okay, so don't chuck them out thinking they're goners!

My thanks again, this will be my first winter with any plants in the garden, I have worked so hard to get it to where it is now.
As everything is in containers and large pots I expect some losses.

You would be surprised ! My third year gardening in pots and it has some advantages.