Where I live they've replaced all the streetlights with LEDs since the lockdown started. I searched for some videos on Gateshead where they first tested them, and I came across an interview with Lee Garrett, who campaigns with Mark Steele. At the start he shows some pictures of kids with nosebleeds, then there's a video of a tree next to an LED lamp post. The side of the tree farthest away from the light looks normal with green leaves, but the side right next to the LED is completely dead. How much evidence do councils and the media need? I'm going to look out for LED lights next to trees now and take photos of them. If the same thing happens, I'll have some 'before and after' pictures.
https://www.youtube.com/watch?v=8G2HdDnBn0Q