I've transported about 300 of these from the garden to the woods and they still keep coming. ( photo / image / picture from Kildale's Garden )
Greys are not my favourite animal as they spread disease to our native reds and compete with them for food. They do look cute, and I'd never deliberately harm them, but I'd still rather that they'd never been introduced to Britain.
I agree they are cute and interesting to watch,..someone gave two of them as a present many years ago and they have increased in population and in turn decreased our native red squirrel.