I am adding this disclaimer juuuuust in case, because people do get Ideas about wildlife from social media videos:

The video mentions that dormice are a protected species in the UK. This is true! This means that, although the video people are largely covered (they found it accidentally while gardening, and immediately moved it to a new hibernation spot), it is illegal to look for or handle dormice without a dormouse licence. Or, without someone supervising you who has a licence.

This is because they're so endangered now that you need to make sure, as much as possible, that you understand their ecology and safe handling before you interfere with them. You don't want to accidentally interrupt hibernation, or drive them away from a shelter/food source, or expose them to weasels, or any other accidental harm. (In this video there is a minor issue - this person is handling the mouse with bare hands, which is not the end of the world but is definitely frowned on in small mammal handling.)

However, they're definitely right - you don't often see these guys!

But if YOU want to see some in person, get in touch with your local Wildlife Trust in August-ish and ask if you can come along and volunteer on their autumn dormouse surveys. A licenced officer will take you out and you can help gather and record small mammal data, which we need for biodiversity monitoring. You will see many mice like woodmice and maybe shrews, and if you are very lucky - maybe dormice