First pic: Plant in foreground looks like a dock of some kind, out of focus background plant looks like Japanese Knotweed. A better photo is needed though sorry.
Second pic: Too small to tell sorry but I assume it's the doc plants again. Definitely not knotweed though.
If you can keep your head, while those around you are losing theirs, you may not have grasped the seriousness of the situation.
@yaz1, could you post a load more pics? Pick some pieces and give us some good focus of the leafs (back and front), flower stems and specific overall plant? Thanks
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I have seen JKW ... it doesn't look like it to me
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Her are some pictures - https://www.google.co.uk/search?source=hp&ei=SrARW-3JDOHi6ATtuIrYAg&q=Japanese+knotweed+images&oq=Japanese+knotweed+images&gs_l=psy-ab.3...2235.10227.0.10406.0.0.0.0.0.0.0.0..0.0....0...1c.1.64.psy-ab..0.0.0....0.47Ic-6uO2YU
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.