The white ermine moth is a moth of the arctiidae family. Some have wings that are plain white and others have white wings with black spots. The are very common in the UK and feed on both garden and wild plants.
yup, also known as a white miller's-soul. It is believed by many people that if a white moth fly's out of someones moth while sleeping or something, they are known to be dead! (I read it in a story called the Superstitious man)
Yes, it's called Ecpantheria scribbonia, and it is a common species of tiger moth. It is white with black spots. (In Europe the term "leopard moth" refers to a carpenterworm moth species which has a similar pattern)