The two bluebells have now flowered and they do not appear to be English bluebells at all. The flower shape and colour is all wrong and the flowers are arranged around the upright stalk rather than being hanging from one side from a drooping flower stalk.
The only things that point towards being English bluebells is that the leaves are narrow and the pollen is maybe a cream colour although I am not sure about the last point. Could well be a hybrid as many bluebells are.
There is one more that has recently started growing a flower so we shall see how that one turns out.