Just to save more comments here, there is amassive thread on prune with many comments from heli crew. Shows how its actaully tricky to make a conclusion based on just one camera footage evidence. But seems its not the first example and most pre date being shown on video. Thankfully no one was hurt just surprised and the chopper stuck to the right of a line feature , just as well. https://www.pprune.org/rotorheads/611774-cumbria-dauphin-fog.html