AD
I'm not too far away from you.
Your "Pine" is certainly a Juniper and will be better outside all year once it is aclimatised.
The others will be OK for a few more weeks, but start putting them into a Garage or Shed for protection if you are at all concerned about outside temps.
They need to adjust s..l..o..w..ly.
Bring them back out in the morning so long as it is not too cold.
Tropicals should be indoors with plenty of light during winter and only sufficient water to keep the soil just moist.
This is known as the "two step" that many have to do with tropicals and tender species.
Do not water the elm, ....with no leaves it just needs slight moisture.
Keep outdoors in a sheltered spot and protect from frost.
It will be spring now before you will hopefully see new growth.
Read up more on here and in books over the Autumn and Winter
Regards,
Ian.