Coral tree flowers

What a beautiful tree! I haven't heard of it before, does it only grow in Japan?

As far as I know these trees tend to grow in warm places such as South American countries, Australia and Hawaii. In Japan we have a different flower representing each prefecture (same as a county in England). The flower of Erythrina represents Okinawa which is the most southern prefecture in Japan. I guess it's probably too cold to grow these in England...