I'm quite familiar with giant hogweed and its dangers. The tall plant I showed was not it. It was a heck of a lot thinner and more delicate. However, there is actually quite a lot of Giant Hog Weed on that estate and the river walk next to it. The river walk in particular has quite a lot of it further up, and it looks pretty impressive when you see it in a big path - it looks rather Jurassic !