Wild Foxglove have self seeded throughout the garden. Each year there seem to be more and more of them. They go nicely with my other cottage garden style plants (delphinium, lupin, aquilegia) although sometimes they look a bit messy scattered about. I like the spots inside the flowers - maybe the best part!
They provide lots of 'free' flowers, and easy to pull out if they come up somewhere you don't want them.
Last year I had white foxglove but this year they all seem to be shades of pink.