A British bluebell? Oak tree? Or other native plant or animal? Read what the Museum's Johannes Vogel is championing in this news article. Or, have your say here.
I agree - I love to see carpets of bluebells in spring, and it's worrying to think our native species could be disappearing.
I am not sure about the oak as it is associated with England rather than UK. I would go for song thrush or maybe dormouse.
The red squirrel because it is so endangered.