Keeping tiger salamanders outdoors uk?

[Nuclear Herps]

I have no intentions of doing this but im curious.There are people who keep tigers in outdoor enclosure in freezing temps in the US.however in the uk it hardly gose under 5c in the winter at night so I was thinking it could work if providing hibernaclum that is.just curious.thanks Harry

 

[Bellabelloo]

I will be keeping my small tiger group outdoors, hopefully spring time onwards. They are currently in an unheated shed while I finish their future home. I am going to use a large cold frame and at present I am digging out the soil for their hibernacula and water area.