After a little bit of research, I think the hummingbird that appeared may not be a hummingbird afterall. I was looking at the english society for the protection of birds and they said that it is near impossible to find a humming bird in england, but apparently a type of moth has been commonly mistaken during the last few summers called the 'hummingbird hawkmoth'.
Hmm maybe it carries spiritual significance as both a hummingbird and a moth?