I found a newt when I was clearing away some more stone and dirt from one of the old, rundown walls. It was cold but floppy, so not dead. I put him in a box in some sunshine while I tried to find out if waking a newt from hibernation will kill them.
As he slowly came back to life, I found that it doesn’t, hooray! Amphibian And Reptile Conservation suggest to put it back where you find it, or somewhere safe and frost-free. I released him next to one of the compost bins. Run free, little newt.