What's this then?

I don't know what this is but a few weeks ago, the tree at the end of our garden dropped all of its leaves (seemed like a funny time of year for it, but there you are) and then bloomed. Amazing, big, red waxy flowers. This is quite a deceptive picture actually, because I must have taken it on the only day in the past 6 weeks when the sun was shining; otherwise it's been rainy and cloudy.