Yes that is the one I was referring to.
The (recent) conclusions of the UK airprox board on that one were :
...it would have been more prudent for the helicopter to operate at a higher altitude due to the possibility of encountering other airspace users up to 400ft above ground level, including drones, paragliders, paramotors and hang-gliders soaring in the region.
There was even a possibility of military aircraft at or below 250ft.