Sometimes crop circles have a connection with events in peoples lives, whether that is on a personal level or a more local or global level. This circle looks very much like the warning symbol for chemical weapons, which is very pertinent to the location it appeared in and the events of recent days. Dawn Sturgess sadly passed away after coming into contact with the Novichok nerve agent, in the Amesbury/Salisbury area not far from the circles location.
So an intergalactic warning about the dangers of chemical weapons, or earth-based artists making the same point? More images can be found over at Crop Circle Connector.
This drone footage is courtesy of Matthew Williams